M16 Shoulder Bolts | McMaster-Carr

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About Shoulder Screws

Comparable to Class 12.9 steel, these alloy steel shoulder screws are the strongest we offer. They have a standard shoulder with an undersized tolerance to fit most machinery and equipment. Also known as stripper bolts, they're commonly used in punch and die assemblies, and as an axle or pivot point.

For technical drawings and 3-D models, click on a part number.

											Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Finish	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
20	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	000000	000000
25	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
30	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
35	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
40	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
45	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
50	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
55	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
60	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
70	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
80	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
90	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
100	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000
120	M16	2	22	30	14	Black Oxide	140,000	10	ISO 7379	000000000	00000	00000

Metric 18-8 Stainless Steel Shoulder Screws

Made from 18-8 stainless steel, these shoulder screws have good chemical resistance and may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.

For technical drawings and 3-D models, click on a part number.

Shoulder Screws

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
14	M16	2	22	30	14	70,000	10	ISO 7379	000000000	000000	000000
20	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
25	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
30	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
35	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
45	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
50	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
55	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
60	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000

Made-to-Order Shoulder Screws

For made-to-order shoulder screws, please specify the shoulder length in 0.25 mm increments.

									Each
Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Choose a Shoulder Lg., mm		1-4	5-9	10-Up
16 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
M16	2	18	24	11	70,000	8	6-49.75	000000000	000000	000000	000000
M16	2	18	24	11	70,000	8	50-99.75	000000000	00000	00000	00000
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
M16	2	22	30	14	70,000	10	13-49.75	000000000	00000	00000	00000
M16	2	22	30	14	70,000	10	50-99.75	000000000	00000	00000	00000
24 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
M16	2	27	36	16	70,000	12	13-49.75	000000000	00000	00000	00000
M16	2	27	36	16	70,000	12	50-99.75	000000000	00000	00000	00000

Same-Size Thread 18-8 Stainless Steel Shoulder Screws

Uncoated

With threads the same diameter as the shoulder, these screws can handle heavy loads. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.

For technical drawings and 3-D models, click on a part number.

Metric

								Uncoated
									Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm		1-4	5-Up
16 mm Shoulder Dia.—Standard Fit (-0.04 to -0.01 mm Dia. Tolerance)
20	M16	2	22	24	11	70,000	8	000000000	000000	000000
25	M16	2	22	24	11	70,000	8	000000000	00000	00000
30	M16	2	22	24	11	70,000	8	000000000	00000	00000
35	M16	2	22	24	11	70,000	8	000000000	00000	00000
40	M16	2	22	24	11	70,000	8	000000000	00000	00000
45	M16	2	22	24	11	70,000	8	000000000	00000	00000
50	M16	2	22	24	11	70,000	8	000000000	00000	00000
60	M16	2	22	24	11	70,000	8	000000000	00000	00000
120	M16	2	22	24	11	70,000	8	000000000	000000	00000

Metric 316 Stainless Steel Shoulder Screws

More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water. They may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.

Black-oxide stainless steel screws have a matte black finish.

Shoulder Screws

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
12	M16	2	22	30	14	70,000	10	ISO 7379	000000000	000000	000000
14	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
16	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
20	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
35	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
40	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
50	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
55	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
60	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
70	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
100	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
110	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
120	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000

Shoulder Screws with a Black-Oxide Finish

										Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Dia., mm	Head Ht., mm	Tensile Strength, psi	Drive Size, mm	Specifications Met		1-4	5-Up
20 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance)
12	M16	2	22	30	14	70,000	10	ISO 7379	000000000	000000	000000
14	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
16	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
20	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
25	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
30	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
35	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
40	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
45	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
50	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
55	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
60	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
70	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
80	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
90	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
100	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
110	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
120	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
130	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
140	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
150	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
160	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
170	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
180	M16	2	22	30	14	70,000	10	ISO 7379	000000000	00000	00000
190	M16	2	22	30	14	70,000	10	ISO 7379	000000000	000000	00000

Metric Steel Hex Head Shoulder Screws

Also known as wheel and axle bolts, these metric screws have an unthreaded shoulder that acts as a shaft, so material attached to the threaded end can rotate. Made of steel, they are strong enough to withstand pulling and stretching without breaking. They are often used with bearings, pulleys, valves, and pumps. The hex head lets you tighten these screws with a wrench, and keeps them in place once they are installed. All of these screws meet DIN 609, which is an international standard for shoulder screw dimensions.

For technical drawings and 3-D models, click on a part number.

									Each
Shoulder Lg., mm	Thread Size	Thread Pitch, mm	Thread Lg., mm	Head Wd., mm	Head Ht., mm	Tensile Strength, psi	Specifications Met		1-4	5-Up
17 mm Shoulder Dia.—Standard Fit (0.001 mm to 0.012 mm Dia. Tolerance)
21.5	M16	2	27	24	10	120,000	DIN 609	000000000	000000	00000
29.5	M16	2	27	24	10	120,000	DIN 609	000000000	00000	0000
39.5	M16	2	27	24	10	120,000	DIN 609	000000000	00000	00000
49.5	M16	2	27	24	10	120,000	DIN 609	000000000	00000	00000
59.5	M16	2	27	24	10	120,000	DIN 609	000000000	00000	00000
69.5	M16	2	27	24	10	120,000	DIN 609	000000000	00000	00000

Eyebolts—For Lifting

With Shoulder

Also known as machinery eyebolts.

Zinc-plated steel eyebolts offer good corrosion resistance.

Galvanized steel eyebolts have a hot-dipped finish for more corrosion resistance than zinc-plated steel.

304 stainless steel eyebolts are more corrosion resistant than galvanized steel.

316 stainless steel are the most corrosion resistant eyebolts.

Note: Capacities listed are for vertical lifting only. Eyebolts with shoulder can be used for angular lifting up to 45°, but the capacities will be significantly reduced. For angular lifting, we recommend Hoist Rings.

Warning: Never use to lift people or items over people.

For technical drawings and 3-D models, click on a part number.

Metric Thread

Thread								With Shoulder
Size	Pitch, mm	Lg., mm	Shank Lg., mm	Overall Lg., mm	Eye Dia., mm	Vertical Capacity, lbs.	Specifications Met		Each
Steel
M16	2	32	32	108	35	3,500	__	0000000	000000
M16	2	76	76	151	35	3,500	__	0000000	00000
Zinc-Plated Steel
M16	2	27	27	89	35	1,525	DIN 580	0000000	00000
Galvanized Steel
M16	2	45	45	121	35	3,500	__	0000000	00000
304 Stainless Steel
M16	2	27	27	89	35	1,525	DIN 580	0000000	00000
316 Stainless Steel
M16	2	27	27	89	35	1,525	DIN 580	0000000	00000

Eyebolts with Nuts—For Lifting

With Shoulder

Also known as nut eyebolts, these are designed for through-hole applications.

316 stainless steel are the most corrosion resistant eyebolts.

Warning: Never use to lift people or items over people.

For technical drawings and 3-D models, click on a part number.

Metric Thread

Thread							Nuts			With Shoulder
Size	Pitch, mm	Lg., mm	Shank Lg., mm	Eye Dia., mm	Vertical Capacity, lbs.	Threading	No. Included	Style	No. of Washers Included	Overall Lg., mm		Each
316 Stainless Steel
M16	2	45	51	31	3,425	Partially Threaded	1	Hex	1	113	0000000	000000

Rotating Eyebolts—For Lifting

Eyebolt

Unlike conventional eyebolts, you can rotate the eye 360° to match the angle of your load.

Powder-coated steel eyebolts are impact resistant, but less corrosion resistant than stainless steel eyebolts. They include a removable key for tightening the bolt.

Stainless steel eyebolts are more corrosion resistant than powder-coated steel eyebolts.

Warning: Never use to lift people or items over people.

Metric Thread

Thread								With Shoulder
Size	Pitch, mm	Lg., mm	Shank Lg., mm	Overall Lg., mm	Eye Dia., mm	Vertical Capacity, lbs.	Color		Each
Powder-Coated Steel
M16	2	24	24	88	35	3,300	Pink	0000000	0000000
Stainless Steel
M16	2	9	24	90	35	2,200	Gray	00000000	000000

Nylon-Coated Eyebolts—For Lifting

With Shoulder

Route wire and cable through the smooth eye without snagging.

Warning: Never use to lift people or items over people.

For technical drawings and 3-D models, click on a part number.

Metric Thread

Thread							With Shoulder
Size	Pitch, mm	Lg., mm	Shank Lg., mm	Eye Dia., mm	Vertical Capacity, lbs.	Temperature Range, °F	Overall Lg., mm		Each
Nylon-Coated Steel
M16	2	32	32	35	3,500	30° to 275°	106	0000000	000000

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About Shoulder Screws

Metric Alloy Steel Shoulder Screws

Metric 18-8 Stainless Steel Shoulder Screws

Same-Size Thread 18-8 Stainless Steel Shoulder Screws

Metric 316 Stainless Steel Shoulder Screws

Metric Steel Hex Head Shoulder Screws

Eyebolts—For Lifting

Eyebolts with Nuts—For Lifting

Rotating Eyebolts—For Lifting

Nylon-Coated Eyebolts—For Lifting