Shoulder Screw Spacers | McMaster-Carr

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System of Measurement

Screw Size

Thickness

Material

Shoulder Diameter

Minimum Hardness

Application

Performance

RoHS

Magnetic Properties

May Be Mildly Magnetic

REACH

Compliant

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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Number of Pieces

Container Features

334 Products

Performance

Corrosion Resistant

Won't rust in wet and outdoor environments

216 products

Chemical Resistant

Won't degrade when exposed to most chemicals

67 products

Performance

Stress Resistant

Hold their shape under heavy loads

118 products

Application

Shoulder Shortening

Pare down the shoulder on shoulder screws to tighten the hold on components

223 products

Shims for Shortening Screw Shoulders

Image of ProductInUse. Front orientation. Contains Annotated. Shims. Sold Individually, Shoulder Shortening, Round.

Pare down the shoulder on shoulder screws. Slide these shims under the screw head to create the length you need. Use them to tighten the hold on bearings, pulleys, and sprockets, or shorten the length of travel along the shoulder.

You can stack multiple shims to achieve the exact shoulder length or space you need.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.

Stress-Resistant Spring Steel—These shims are harder and hold their shape better than carbon steel. Use them for high-stress applications, such as leveling heavy machinery. They're best for dry environments since moisture will cause them to rust.

	Thk.	Thk. Tolerance	For Screw Size	ID	ID Tolerance	OD	OD Tolerance	Min. Hardness	Pkg. Qty.		Pkg.
18-8 Stainless Steel





				For 1/8" Diameter Shoulder
				0.005"	-0.0005" to 0.0005"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
				0.01"	-0.001" to 0.001"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
				0.016"	-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
				0.02"	-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
				0.03"	-0.003" to 0.003"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
				0.06"	-0.004" to 0.004"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	5	000000000	0000



						For 3/16" Diameter Shoulder
						0.005"	-0.0005" to 0.0005"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
						0.01"	-0.001" to 0.001"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
						0.016"	-0.002" to 0.002"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
						0.02"	-0.002" to 0.002"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
						0.03"	-0.003" to 0.003"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
						0.06"	-0.004" to 0.004"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	5	000000000	0000



								For 1/4" Diameter Shoulder
								0.005"	-0.0005" to 0.0005"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	000000000	0000
								0.01"	-0.001" to 0.001"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	100	000000000	00000
								0.016"	-0.002" to 0.002"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	000000000	00000
								0.02"	-0.0025" to 0.0025"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	000000000	0000
								0.03"	-0.003" to 0.003"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	50	000000000	00000
								0.06"	-0.0035" to 0.0035"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000



										For 5/16" Diameter Shoulder
										0.005"	-0.0005" to 0.0005"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	50	000000000	0000
										0.01"	-0.001" to 0.001"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
										0.016"	-0.002" to 0.002"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
										0.02"	-0.0025" to 0.0025"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
										0.03"	-0.003" to 0.003"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	100	000000000	00000
										0.06"	-0.0035" to 0.0035"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000



												For 3/8" Diameter Shoulder
												0.005"	-0.0005" to 0.0005"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
												0.01"	-0.001" to 0.001"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
												0.016"	-0.002" to 0.002"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
												0.02"	-0.0025" to 0.0025"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
												0.03"	-0.003" to 0.003"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	50	000000000	00000
												0.06"	-0.0035" to 0.0035"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000



														For 1/2" Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
														0.01"	-0.001" to 0.001"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
														0.016"	-0.002" to 0.002"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
														0.02"	-0.0025" to 0.0025"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
														0.03"	-0.003" to 0.003"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	50	000000000	00000
														0.06"	-0.0035" to 0.0035"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000



	For 5/8" Diameter Shoulder
	0.005"														-0.0005" to 0.0005"	1/2"	5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
	0.01"														-0.001" to 0.001"	1/2"	5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
	0.016"	-0.002" to 0.002"													1/2"	5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
	0.02"	-0.0025" to 0.0025"	1/2"												5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
	0.03"	-0.003" to 0.003"	1/2"												5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
	0.06"	-0.0035" to 0.0035"	1/2"												5/8"	0" to 0.012"	7/8"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000



			For 3/4" Diameter Shoulder
			0.005"												-0.0005" to 0.0005"	5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	25	000000000	0000
			0.01"												-0.001" to 0.001"	5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
			0.016"												-0.002" to 0.002"	5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
			0.02"	-0.0025" to 0.0025"											5/8"	3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
			0.03"	-0.003" to 0.003"	5/8"										3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
			0.06"	-0.0035" to 0.0035"	5/8"										3/4"	0" to 0.012"	1"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000



					For 1" Diameter Shoulder
					0.005"										-0.0005" to 0.0005"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
					0.01"										-0.001" to 0.001"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	25	000000000	00000
					0.03"										-0.003" to 0.003"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
					0.06"										-0.0035" to 0.0035"	7/8"	1"	0" to 0.012"	1 1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000



							For 4 mm Diameter Shoulder
							0.005"								-0.0005" to 0.0005"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000
							0.01"								-0.001" to 0.001"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000
							0.031"								-0.003" to 0.003"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000



																For 5 mm Diameter Shoulder
								0.005"								-0.0005" to 0.0005"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000
								0.01"	-0.001" to 0.001"							M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000
								0.031"	-0.003" to 0.003"							M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000



																For 6 mm Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
																0.01"	-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
																0.015"	-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
										0.02"						-0.0015" to 0.0015"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
										0.025"	-0.0015" to 0.0015"					M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
										0.031"	-0.002" to 0.002"					M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
										0.062"	-0.002" to 0.002"					M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000



																For 8 mm Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
																0.01"	-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
												0.015"				-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
												0.02"	-0.0015" to 0.0015"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
												0.025"	-0.0015" to 0.0015"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
												0.031"	-0.002" to 0.002"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
												0.062"	-0.002" to 0.002"			M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



													For 10 mm Diameter Shoulder
													0.005"			-0.0005" to 0.0005"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.01"			-0.001" to 0.001"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.015"	-0.001" to 0.001"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.02"	-0.0015" to 0.0015"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.025"	-0.0015" to 0.0015"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.031"	-0.002" to 0.002"		M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
													0.062"	-0.002" to 0.002"		M10	10 mm	0 mm to 0.25 mm	14.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



													For 12 mm Diameter Shoulder
													0.005"	-0.0005" to 0.0005"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.01"	-0.001" to 0.001"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.015"	-0.001" to 0.001"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.02"	-0.0015" to 0.0015"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
													0.025"	-0.0015" to 0.0015"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
													0.031"	-0.002" to 0.002"		M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
			0.062"										-0.002" to 0.002"	M12		12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



													For 16 mm Diameter Shoulder
													0.005"	-0.0005" to 0.0005"		M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
													0.01"	-0.001" to 0.001"		M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
													0.015"	-0.001" to 0.001"		M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
					0.02"								-0.0015" to 0.0015"	M16		16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
					0.025"	-0.0015" to 0.0015"							M16	16 mm		0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
					0.031"	-0.002" to 0.002"							M16	16 mm		0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
					0.062"	-0.002" to 0.002"							M16	16 mm		0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000



							For 20 mm Diameter Shoulder
							0.005"						-0.0005" to 0.0005"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
							0.01"						-0.001" to 0.001"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
							0.015"						-0.001" to 0.001"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
							0.02"						-0.0015" to 0.0015"	M20		20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
							0.025"						-0.0015" to 0.0015"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
							0.031"						-0.002" to 0.002"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000
							0.062"						-0.002" to 0.002"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	00000



									For 30 mm Diameter Shoulder
									0.062"				-0.004" to 0.004"	M30	30 mm	0 mm to 0.25 mm	40 mm	0 mm to 0.25 mm	Rockwell B70	5	000000000	00000

									Super-Corrosion-Resistant 316 Stainless Steel





																For 1/8" Diameter Shoulder
										0.005"						-0.0005" to 0.0005"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
										0.01"	-0.001" to 0.001"					No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000
										0.03"	-0.003" to 0.003"					No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	0000



																For 3/16" Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
																0.01"	-0.001" to 0.001"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
0.03"																-0.003" to 0.003"	No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000



																For 1/4" Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
																0.01"	-0.001" to 0.001"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
																0.03"	-0.003" to 0.003"	No. 10	1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000



		For 5/16" Diameter Shoulder
		0.005"															-0.0005" to 0.0005"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
		0.01"															-0.001" to 0.001"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
		0.03"															-0.003" to 0.003"	1/4"	5/16"	0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000



																		For 3/8" Diameter Shoulder
																		0.005"	-0.0005" to 0.0005"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
																		0.01"	-0.001" to 0.001"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
																		0.03"	-0.003" to 0.003"	5/16"	3/8"	0" to 0.012"	9/16"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000



																		For 1/2" Diameter Shoulder
																		0.005"	-0.0005" to 0.0005"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
																		0.01"	-0.001" to 0.001"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000
																		0.03"	-0.003" to 0.003"	3/8"	1/2"	0" to 0.012"	3/4"	-0.005" to 0.002"	Rockwell B70	10	000000000	00000



																				For 4 mm Diameter Shoulder
					0.005"															-0.0005" to 0.0005"	M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000
					0.031"	-0.003" to 0.003"														M4	4 mm	0 mm to 0.25 mm	7.78 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	0000



																				For 5 mm Diameter Shoulder
																				0.005"	-0.0005" to 0.0005"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000
																				0.01"	-0.001" to 0.001"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	00000
																				0.031"	-0.003" to 0.003"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	0 mm to 0.25 mm	Rockwell B70	10	000000000	0000



								For 6 mm Diameter Shoulder
								0.005"													-0.0005" to 0.0005"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
								0.01"													-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
								0.031"													-0.003" to 0.003"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	0000



													For 8 mm Diameter Shoulder
													0.005"								-0.0005" to 0.0005"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.01"								-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
													0.031"	-0.003" to 0.003"							M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	0000



															For 10 mm Diameter Shoulder
															0.005"						-0.0005" to 0.0005"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
										0.01"					-0.001" to 0.001"						M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
										0.031"	-0.003" to 0.003"				M10						10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	0000



For 12 mm Diameter Shoulder
0.005"															-0.0005" to 0.0005"						M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
0.01"															-0.001" to 0.001"						M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
0.031"															-0.003" to 0.003"						M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



															For 16 mm Diameter Shoulder
															0.005"						-0.0005" to 0.0005"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
	0.01"														-0.001" to 0.001"						M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
	0.031"														-0.003" to 0.003"						M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



																For 20 mm Diameter Shoulder
		0.005"														-0.0005" to 0.0005"					M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
		0.01"														-0.001" to 0.001"					M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000
		0.031"														-0.003" to 0.003"					M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell B70	5	000000000	0000

		Stress-Resistant Spring Steel





																	For 1/8" Diameter Shoulder
																	0.005"				-0.0005" to 0.0005"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
																	0.01"				-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
																	0.015"				-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
																	0.02"				-0.002" to 0.002"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
																	0.032"				-0.003" to 0.003"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
																	0.062"				-0.004" to 0.004"	No. 4	1/8"	0" to 0.012"	1/4"	-0.005" to 0.002"	Rockwell C40	5	000000000	0000



																		For 3/16" Diameter Shoulder
					0.005"													-0.0005" to 0.0005"				No. 8	3/16"	0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
					0.01"	-0.002" to 0.002"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
					0.015"	-0.002" to 0.002"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
					0.02"	-0.002" to 0.002"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
					0.032"	-0.003" to 0.003"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	10	000000000	0000
					0.062"	-0.004" to 0.004"												No. 8	3/16"			0" to 0.012"	5/16"	-0.005" to 0.002"	Rockwell C40	5	000000000	0000



							For 1/4" Diameter Shoulder
							0.005"											-0.0005" to 0.0005"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	000000000	00000
							0.01"											-0.002" to 0.002"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	000000000	0000
							0.015"											-0.002" to 0.002"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	000000000	0000
							0.02"											-0.002" to 0.002"	No. 10			1/4"	0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	25	000000000	0000
							0.032"											-0.003" to 0.003"	No. 10	1/4"		0" to 0.012"	3/8"	-0.005" to 0.002"	Rockwell C40	100	000000000	00000
							0.062"	-0.004" to 0.004"										No. 10	1/4"	0" to 0.012"		3/8"	-0.005" to 0.002"	Rockwell C40	100	000000000	00000



									For 5/16" Diameter Shoulder
									0.005"									-0.0005" to 0.0005"	1/4"	5/16"		0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell C40	25	000000000	00000
									0.01"									-0.002" to 0.002"	1/4"	5/16"		0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell C40	25	000000000	0000
									0.015"									-0.002" to 0.002"	1/4"	5/16"		0" to 0.012"	7/16"	-0.005" to 0.002"	Rockwell C40	25	000000000	0000
									0.02"				-0.002" to 0.002"	1/4"				5/16"	0" to 0.012"	7/16"		-0.005" to 0.002"	Rockwell C40	25	000000000	0000
									0.032"				-0.003" to 0.003"	1/4"				5/16"	0" to 0.012"	7/16"		-0.005" to 0.002"	Rockwell C40	100	000000000	00000
									0.062"				-0.004" to 0.004"	1/4"				5/16"	0" to 0.012"	7/16"		-0.005" to 0.002"	Rockwell C40	100	000000000	00000



														For 3/8" Diameter Shoulder
										0.005"				-0.0005" to 0.0005"				5/16"	3/8"	0" to 0.012"		9/16"	-0.005" to 0.002"	Rockwell C40	25	000000000	00000
										0.01"	-0.002" to 0.002"			5/16"				3/8"	0" to 0.012"	9/16"		-0.005" to 0.002"	Rockwell C40	25	000000000	0000
										0.015"	-0.002" to 0.002"			5/16"				3/8"	0" to 0.012"	9/16"		-0.005" to 0.002"	Rockwell C40	25	000000000	0000
0.02"										-0.002" to 0.002"	5/16"			3/8"				0" to 0.012"	9/16"	-0.005" to 0.002"		Rockwell C40	25	000000000	0000
0.032"										-0.003" to 0.003"	5/16"			3/8"				0" to 0.012"	9/16"	-0.005" to 0.002"		Rockwell C40	100	000000000	00000
0.062"										-0.004" to 0.004"	5/16"			3/8"				0" to 0.012"	9/16"	-0.005" to 0.002"		Rockwell C40	100	000000000	00000



											For 1/2" Diameter Shoulder
	0.005"										-0.0005" to 0.0005"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	10	000000000	00000
	0.01"										-0.002" to 0.002"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	25	000000000	0000
	0.015"										-0.002" to 0.002"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	25	000000000	0000
	0.02"										-0.002" to 0.002"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	25	000000000	0000
	0.032"										-0.003" to 0.003"	3/8"		1/2"				0" to 0.012"	3/4"	-0.005" to 0.002"		Rockwell C40	50	000000000	00000
	0.062"										-0.004" to 0.004"	3/8"		1/2"	0" to 0.012"			3/4"	-0.005" to 0.002"	Rockwell C40		50	000000000	00000



											For 5/8" Diameter Shoulder
											0.005"	-0.0005" to 0.0005"		1/2"	5/8"			0" to 0.012"	7/8"	-0.005" to 0.002"		Rockwell C40	10	000000000	00000
			0.01"								-0.002" to 0.002"	1/2"		5/8"	0" to 0.012"			7/8"	-0.005" to 0.002"	Rockwell C40		25	000000000	0000
			0.015"	-0.002" to 0.002"							1/2"	5/8"		0" to 0.012"	7/8"			-0.005" to 0.002"	Rockwell C40	25		000000000	0000
			0.02"	-0.002" to 0.002"							1/2"	5/8"		0" to 0.012"	7/8"			-0.005" to 0.002"	Rockwell C40	25		000000000	0000
			0.032"	-0.003" to 0.003"							1/2"	5/8"		0" to 0.012"	7/8"	-0.005" to 0.002"		Rockwell C40	25	000000000		0000
			0.062"	-0.004" to 0.004"							1/2"	5/8"		0" to 0.012"	7/8"	-0.005" to 0.002"		Rockwell C40	25	000000000		0000



											For 3/4" Diameter Shoulder
											0.005"	-0.0005" to 0.0005"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		10	000000000	00000
											0.01"	-0.002" to 0.002"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	000000000	0000
											0.015"	-0.002" to 0.002"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	000000000	0000
											0.02"	-0.002" to 0.002"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	000000000	0000
											0.032"	-0.003" to 0.003"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	000000000	0000
											0.062"	-0.004" to 0.004"		5/8"	3/4"	0" to 0.012"		1"	-0.005" to 0.002"	Rockwell C40		25	000000000	0000



														For 5 mm Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
					0.01"									-0.001" to 0.001"	M5	5 mm	0 mm to 0.25 mm	7.82 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000



														For 6 mm Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
														0.01"	-0.001" to 0.001"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
														0.02"	-0.002" to 0.002"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	0000
														0.06"	-0.004" to 0.004"	M6	6 mm	0 mm to 0.25 mm	9.78 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000



														For 8 mm Diameter Shoulder
														0.005"	-0.0005" to 0.0005"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
														0.01"	-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
														0.015"	-0.001" to 0.001"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	0000
														0.02"	-0.002" to 0.002"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
														0.031"	-0.003" to 0.003"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	0000
														0.06"	-0.004" to 0.004"	M8	8 mm	0 mm to 0.25 mm	12.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000



															For 10 mm Diameter Shoulder
															0.005"	-0.0005" to 0.0005"	M10	10 mm	0 mm to 0.25 mm	14.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.01"		-0.001" to 0.001"	M10	10 mm	0 mm to 0.25 mm	14.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.015"		-0.001" to 0.001"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
													0.02"		-0.002" to 0.002"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
													0.031"		-0.003" to 0.003"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
													0.06"		-0.004" to 0.004"	M10	10 mm	0 mm to 0.25 mm	15.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000



													For 12 mm Diameter Shoulder
													0.005"		-0.0005" to 0.0005"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.01"		-0.001" to 0.001"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.015"		-0.001" to 0.001"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
													0.02"		-0.002" to 0.002"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
													0.031"		-0.003" to 0.003"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
													0.06"		-0.004" to 0.004"	M12	12 mm	0 mm to 0.25 mm	17.73 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000



													For 16 mm Diameter Shoulder
													0.01"		-0.001" to 0.001"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.015"		-0.001" to 0.001"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.02"		-0.002" to 0.002"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.031"		-0.003" to 0.003"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
													0.06"		-0.004" to 0.004"	M16	16 mm	0 mm to 0.25 mm	23.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000



				For 20 mm Diameter Shoulder
				0.015"											-0.001" to 0.001"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
				0.02"											-0.002" to 0.002"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
				0.06"											-0.004" to 0.004"	M20	20 mm	0 mm to 0.25 mm	29.67 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000

Shims for Lengthening Screw Shoulders

Image of ProductInUse. Front orientation. Contains Annotated. Shims. Round, Sold Individually, Shoulder Lengthening.

When shoulders come up short, use these shims to extend the shoulder length on your screw. Wiggle the shims over the threads and up to the existing shoulder to create the exact shoulder length you need. Use them to create more space for bearings, pulleys, and sprockets, or extend the length of travel along the shoulder.

You can stack multiple shims to achieve the exact shoulder length or space you need.

18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.

Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.

	Thk.	Thk. Tolerance	For Screw Size	ID	ID Tolerance	OD	OD Tolerance	Min. Hardness	Pkg. Qty.		Pkg.
18-8 Stainless Steel





				For 3/16" Diameter Shoulder
				0.005"	-0.0005" to 0.0005"	No. 8	0.146"	0" to 0.011"	0.178"	-0.002" to 0.002"	Rockwell B70	10	000000000	000000



						For 1/4" Diameter Shoulder
						0.005"	-0.0005" to 0.0005"	No. 10	0.171"	0" to 0.011"	0.241"	-0.002" to 0.002"	Rockwell B70	50	000000000	00000
						0.016"	-0.002" to 0.002"	No. 10	0.171"	0" to 0.011"	0.241"	-0.002" to 0.002"	Rockwell B70	50	000000000	00000
						0.03"	-0.003" to 0.003"	No. 10	0.171"	0" to 0.011"	0.241"	-0.002" to 0.002"	Rockwell B70	25	000000000	0000



								For 5/16" Diameter Shoulder
								0.005"	-0.0005" to 0.0005"	1/4"	0.234"	0" to 0.011"	0.303"	-0.002" to 0.002"	Rockwell B70	50	000000000	00000
								0.016"	-0.002" to 0.002"	1/4"	0.234"	0" to 0.011"	0.303"	-0.002" to 0.002"	Rockwell B70	25	000000000	0000
								0.03"	-0.003" to 0.003"	1/4"	0.234"	0" to 0.011"	0.303"	-0.002" to 0.002"	Rockwell B70	25	000000000	0000



										For 3/8" Diameter Shoulder
										0.005"	-0.0005" to 0.0005"	5/16"	0.289"	0" to 0.011"	0.365"	-0.002" to 0.002"	Rockwell B70	50	000000000	00000
										0.016"	-0.002" to 0.002"	5/16"	0.289"	0" to 0.011"	0.365"	-0.002" to 0.002"	Rockwell B70	25	000000000	00000
										0.03"	-0.003" to 0.003"	5/16"	0.289"	0" to 0.011"	0.365"	-0.002" to 0.002"	Rockwell B70	25	000000000	00000



												For 1/2" Diameter Shoulder
												0.005"	-0.0005" to 0.0005"	3/8"	0.352"	0" to 0.011"	0.491"	-0.002" to 0.002"	Rockwell B70	25	000000000	00000
												0.016"	-0.002" to 0.002"	3/8"	0.352"	0" to 0.011"	0.491"	-0.002" to 0.002"	Rockwell B70	25	000000000	00000
												0.03"	-0.003" to 0.003"	3/8"	0.352"	0" to 0.011"	0.491"	-0.002" to 0.002"	Rockwell B70	25	000000000	00000



														For 5/8" Diameter Shoulder
														0.016"	-0.002" to 0.002"	1/2"	0.473"	0" to 0.011"	0.616"	-0.002" to 0.002"	Rockwell B70	25	000000000	00000
														0.03"	-0.003" to 0.003"	1/2"	0.473"	0" to 0.011"	0.616"	-0.002" to 0.002"	Rockwell B70	10	000000000	0000



																For 6 mm Diameter Shoulder
																0.005"	-0.0005" to 0.0005"	M5	4.95 mm	0 mm to 0.25 mm	5.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																0.01"	-0.001" to 0.001"	M5	4.95 mm	0 mm to 0.25 mm	5.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																0.015"	-0.001" to 0.001"	M5	4.95 mm	0 mm to 0.25 mm	5.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000



																		For 8 mm Diameter Shoulder
																		0.005"	-0.0005" to 0.0005"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																		0.01"	-0.001" to 0.001"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																		0.015"	-0.001" to 0.001"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																		0.02"	-0.0015" to 0.0015"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																		0.025"	-0.0015" to 0.0015"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																		0.031"	-0.002" to 0.002"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000



																				For 10 mm Diameter Shoulder
																				0.005"	-0.0005" to 0.0005"	M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
																				0.01"	-0.001" to 0.001"	M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
0.015"																				-0.001" to 0.001"	M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
0.02"	-0.0015" to 0.0015"																			M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
0.025"	-0.0015" to 0.0015"																			M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
0.031"	-0.002" to 0.002"	M8																		7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000



		For 12 mm Diameter Shoulder
		0.005"	-0.0005" to 0.0005"																	M10	9.7 mm	0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
		0.01"	-0.001" to 0.001"	M10																9.7 mm	0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
		0.015"	-0.001" to 0.001"	M10	9.7 mm															0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
		0.02"	-0.0015" to 0.0015"	M10	9.7 mm															0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
		0.025"	-0.0015" to 0.0015"	M10	9.7 mm															0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
		0.031"	-0.002" to 0.002"	M10	9.7 mm															0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000



				For 16 mm Diameter Shoulder
				0.005"	-0.0005" to 0.0005"	M12	11.65 mm													0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
				0.01"	-0.001" to 0.001"	M12	11.65 mm													0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
				0.015"	-0.001" to 0.001"	M12	11.65 mm													0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
				0.02"	-0.0015" to 0.0015"	M12	11.65 mm													0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
				0.025"	-0.0015" to 0.0015"	M12	11.65 mm													0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	0000
				0.031"	-0.002" to 0.002"	M12	11.65 mm													0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	00000



						For 20 mm Diameter Shoulder
						0.005"	-0.0005" to 0.0005"	M16	15.5 mm											0 mm to 0.25 mm	19.93 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
						0.01"	-0.001" to 0.001"	M16	15.5 mm											0 mm to 0.25 mm	19.93 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
						0.015"	-0.001" to 0.001"	M16	15.5 mm											0 mm to 0.25 mm	19.93 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
						0.02"	-0.0015" to 0.0015"	M16	15.5 mm											0 mm to 0.25 mm	19.93 mm	-0.25 mm to 0 mm	Rockwell C40	10	000000000	00000
						0.025"	-0.0015" to 0.0015"	M16	15.5 mm	0 mm to 0.25 mm										19.93 mm	-0.25 mm to 0 mm	Rockwell C40	5	000000000	00000
						0.031"	-0.002" to 0.002"	M16	15.5 mm	0 mm to 0.25 mm	19.93 mm									-0.25 mm to 0 mm	Rockwell C40	5	000000000	00000

						Super-Corrosion-Resistant 316 Stainless Steel





										For 3/16" Diameter Shoulder
										0.005"	-0.0005" to 0.0005"	No. 8	0.146"							0" to 0.011"	0.178"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000



												For 1/4" Diameter Shoulder
												0.005"	-0.0005" to 0.0005"							No. 10	0.171"	0" to 0.011"	0.241"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
												0.016"	-0.002" to 0.002"	No. 10						0.171"	0" to 0.011"	0.241"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
												0.03"	-0.003" to 0.003"	No. 10	0.171"					0" to 0.011"	0.241"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000



														For 5/16" Diameter Shoulder
														0.005"	-0.0005" to 0.0005"					1/4"	0.234"	0" to 0.011"	0.303"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
														0.016"	-0.002" to 0.002"					1/4"	0.234"	0" to 0.011"	0.303"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
														0.03"	-0.003" to 0.003"	1/4"				0.234"	0" to 0.011"	0.303"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000



																For 3/8" Diameter Shoulder
																0.005"	-0.0005" to 0.0005"			5/16"	0.289"	0" to 0.011"	0.365"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
																0.016"	-0.002" to 0.002"			5/16"	0.289"	0" to 0.011"	0.365"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
																0.03"	-0.003" to 0.003"			5/16"	0.289"	0" to 0.011"	0.365"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000



																		For 1/2" Diameter Shoulder
																		0.005"	-0.0005" to 0.0005"	3/8"	0.352"	0" to 0.011"	0.491"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
0.016"																		-0.002" to 0.002"	3/8"	0.352"	0" to 0.011"	0.491"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000
0.03"	-0.003" to 0.003"																	3/8"	0.352"	0" to 0.011"	0.491"	-0.002" to 0.002"	Rockwell B70	10	000000000	00000



																		For 6 mm Diameter Shoulder
																		0.005"	-0.0005" to 0.0005"	M5	4.95 mm	0 mm to 0.25 mm	5.96 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
																		0.015"	-0.001" to 0.001"	M5	4.95 mm	0 mm to 0.25 mm	5.96 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



			For 8 mm Diameter Shoulder
			0.005"																-0.0005" to 0.0005"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
			0.015"																-0.001" to 0.001"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
			0.031"																-0.002" to 0.002"	M6	5.92 mm	0 mm to 0.25 mm	7.95 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



																				For 10 mm Diameter Shoulder
																				0.005"	-0.0005" to 0.0005"	M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
																				0.015"	-0.001" to 0.001"	M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
				0.031"																-0.002" to 0.002"	M8	7.82 mm	0 mm to 0.25 mm	9.95 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



																				For 12 mm Diameter Shoulder
																				0.015"	-0.001" to 0.001"	M10	9.7 mm	0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
																				0.031"	-0.002" to 0.002"	M10	9.7 mm	0 mm to 0.25 mm	11.96 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



																						For 16 mm Diameter Shoulder
						0.005"																-0.0005" to 0.0005"	M12	11.65 mm	0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000
						0.031"	-0.002" to 0.002"															M12	11.65 mm	0 mm to 0.25 mm	15.5 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000



								For 20 mm Diameter Shoulder
								0.031"	-0.002" to 0.002"													M16	15.5 mm	0 mm to 0.25 mm	19.93 mm	-0.25 mm to 0 mm	Rockwell B70	10	000000000	00000

								Stress-Resistant Spring Steel





																						For 3/16" Diameter Shoulder
																						0.005"	-0.0005" to 0.0005"	No. 8	0.146"	0" to 0.011"	0.185"	-0.002" to 0.002"	Rockwell C40	10	000000000	00000



																						For 1/4" Diameter Shoulder
																						0.005"	-0.0005" to 0.0005"	No. 10	0.171"	0" to 0.011"	0.248"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
																						0.015"	-0.00075" to 0.00075"	No. 10	0.171"	0" to 0.011"	0.248"	-0.002" to 0.002"	Rockwell C40	50	000000000	00000
																						0.032"	-0.0015" to 0.0015"	No. 10	0.187"	0" to 0.011"	0.248"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000



																						For 5/16" Diameter Shoulder
																						0.005"	-0.0005" to 0.0005"	1/4"	0.234"	0" to 0.011"	0.308"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
																						0.015"	-0.00075" to 0.00075"	1/4"	0.234"	0" to 0.011"	0.308"	-0.002" to 0.002"	Rockwell C40	50	000000000	00000
																						0.032"	-0.0015" to 0.0015"	1/4"	0.234"	0" to 0.011"	0.308"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000



																						For 3/8" Diameter Shoulder
																						0.005"	-0.0005" to 0.0005"	5/16"	0.289"	0" to 0.011"	0.371"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
0.015"																						-0.00075" to 0.00075"	5/16"	0.289"	0" to 0.011"	0.371"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
0.032"	-0.0015" to 0.0015"																					5/16"	0.296"	0" to 0.011"	0.371"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000



																						For 1/2" Diameter Shoulder
																						0.005"	-0.0005" to 0.0005"	3/8"	0.352"	0" to 0.011"	0.496"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
		0.015"																				-0.00075" to 0.00075"	3/8"	0.352"	0" to 0.011"	0.496"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
		0.032"																				-0.0015" to 0.0015"	3/8"	0.352"	0" to 0.011"	0.496"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000



																						For 5/8" Diameter Shoulder
			0.005"																			-0.0005" to 0.0005"	1/2"	0.473"	0" to 0.011"	0.621"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
			0.015"																			-0.00075" to 0.00075"	1/2"	0.473"	0" to 0.011"	0.621"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
			0.032"																			-0.0015" to 0.0015"	1/2"	0.473"	0" to 0.011"	0.621"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000



																						For 3/4" Diameter Shoulder
				0.005"																		-0.0005" to 0.0005"	5/8"	0.598"	0" to 0.011"	0.746"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
				0.015"	-0.00075" to 0.00075"																	5/8"	0.598"	0" to 0.011"	0.746"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000
				0.032"	-0.0015" to 0.0015"																	5/8"	0.598"	0" to 0.011"	0.746"	-0.002" to 0.002"	Rockwell C40	25	000000000	00000



																						For 5 mm Diameter Shoulder
																				0.005"		-0.0005" to 0.0005"	M4	3.98 mm	0 mm to 0.254 mm	5 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	00000
																				0.015"	-0.001" to 0.001"	M4	3.98 mm	0 mm to 0.254 mm	5 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	00000



						For 6 mm Diameter Shoulder
						0.005"																-0.0005" to 0.0005"	M5	4.976 mm	0 mm to 0.254 mm	6 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	00000
						0.015"	-0.001" to 0.001"															M5	4.976 mm	0 mm to 0.254 mm	6 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	00000



																						For 8 mm Diameter Shoulder
								0.005"														-0.0005" to 0.0005"	M6	5.852 mm	0 mm to 0.254 mm	8 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000
								0.015"	-0.001" to 0.001"													M6	5.852 mm	0 mm to 0.254 mm	8 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000
								0.031"	-0.002" to 0.002"													M6	5.852 mm	0 mm to 0.254 mm	8 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000



										For 10 mm Diameter Shoulder
										0.005"	-0.0005" to 0.0005"											M8	7.688 mm	0 mm to 0.254 mm	10 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000
										0.015"	-0.001" to 0.001"											M8	7.688 mm	0 mm to 0.254 mm	10 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000
										0.031"	-0.002" to 0.002"	M8										7.688 mm	0 mm to 0.254 mm	10 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000



												For 12 mm Diameter Shoulder
												0.005"	-0.0005" to 0.0005"									M10	9.522 mm	0 mm to 0.254 mm	12 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000
												0.015"	-0.001" to 0.001"									M10	9.522 mm	0 mm to 0.254 mm	12 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000
												0.031"	-0.002" to 0.002"									M10	9.522 mm	0 mm to 0.254 mm	12 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000



														For 16 mm Diameter Shoulder
														0.015"	-0.001" to 0.001"							M12	11.355 mm	0 mm to 0.254 mm	16 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000
														0.031"	-0.002" to 0.002"							M12	11.355 mm	0 mm to 0.254 mm	16 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000



																For 20 mm Diameter Shoulder
																0.031"	-0.002" to 0.002"					M16	15.19 mm	0 mm to 0.254 mm	20 mm	-0.254 mm to 0 mm	Rockwell C40	5	000000000	0000

Shim Assortments for Shortening Screw Shoulders

Image of Product. Front orientation. Shims. Round, Sold as Assortments, Shoulder Shortening.

Customize your shoulder lengths by keeping multiple shoulder-shortening shim sizes on hand. Pare down the shoulder on shoulder screws by sliding these shims under the screw head to create the length you need. Use them to tighten the hold on bearings, pulleys, and sprockets, or shorten the length of travel along the shoulder.

You can stack multiple shims to achieve the exact shoulder length or space you need.

Plastic Box—Labels in the lid make it easy to quickly find the right size.

	For Shoulder Dia.	Thicknesses Included	Container Type		Each
Stress-Resistant Spring Steel


	270	1/4", 5/16", 3/8", 1/2", 5/8", 3/4"	0.005", 0.015", 0.032"	Plastic Box	000000000	0000000

Shim Assortments for Lengthening Screw Shoulders

Image of Product. Front orientation. Shims. Round, Sold as Assortments, Shoulder Lengthening.

Customize your shoulder lengths by keeping multiple shoulder-lengthening shim sizes on hand. When shoulders come up short, use these shims to extend the shoulder length on your screw. Wiggle the shims over the threads and up to the existing shoulder to create the exact shoulder length you need. Use them to create more space for bearings, pulleys, and sprockets, or extend the length of travel along the shoulder.

You can stack multiple shims to achieve the exact shoulder length or space you need.

Plastic Box—Labels in the lid make it easy to quickly find the right size.

	For Shoulder Dia.	Thicknesses Included	Container Type		Each
Stress-Resistant Spring Steel


	270	1/4", 5/16", 3/8", 1/2", 5/8", 3/4"	0.005", 0.015", 0.032"	Plastic Box	000000000	0000000
	300	1/4", 5/16", 3/8", 1/2", 5/8", 3/4"	0.015"	Plastic Box	000000000	000000