Acetal-Head Screws | McMaster-Carr

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245 Products

About Thumb Screw and Binding Post Materials

These thumb screws have a knurled head for a slip-resistant controlled adjustment. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. Length is measured from under the head.

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

			Head
Lg.	Threading	Min. Thread Lg.	Dia.	Ht.	Temperature Range, °F	Choose a Head Color	Pkg. Qty.		Pkg.
18-8 Stainless Steel
4-40
1/4"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black, Red	25	000000000	00000
3/8"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black, Red	25	000000000	0000
1/2"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black, Red	25	000000000	00000
5/8"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black, Red	25	000000000	00000
3/4"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black, Red	25	000000000	00000
1"	Partially Threaded	3/4"	5/16"	11/64"	32° to 180°	Black, Red	25	000000000	00000
6-32
1/4"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black, Red	25	000000000	00000
3/8"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black, Red	25	000000000	00000
1/2"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black, Red	25	000000000	00000
5/8"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black, Red	25	000000000	00000
3/4"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black, Red	25	000000000	00000
7/8"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black, Red	25	000000000	00000
1"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black, Red	25	000000000	00000
8-32
1/4"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black, Red	25	000000000	00000
3/8"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black, Red	25	000000000	00000
1/2"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black, Red	25	000000000	00000
5/8"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black, Red	25	000000000	00000
3/4"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black, Red	25	000000000	00000
7/8"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black, Red	25	000000000	00000
1"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black, Red	25	000000000	00000
10-24
3/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
1/2"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
5/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
3/4"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
7/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	10	000000000	0000
1"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	10	000000000	0000
10-32
3/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
1/2"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
5/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
3/4"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	25	000000000	00000
7/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	10	000000000	0000
1"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black, Red	10	000000000	0000
1 1/2"	Partially Threaded	7/8"	5/8"	1/4"	32° to 180°	Black, Red	10	000000000	00000
1/4"-20
3/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	0000
1/2"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	0000
5/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	0000
3/4"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
7/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
1"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
1 1/4"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
1 1/2"	Partially Threaded	1"	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
1 3/4"	Partially Threaded	1"	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
2"	Partially Threaded	1"	3/4"	5/16"	32° to 180°	Black, Red	5	000000000	0000
1/4"-28
3/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
1/2"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
5/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
3/4"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
7/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
1"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
1 1/4"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black, Red	10	000000000	00000
5/16"-18
1/2"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	10	000000000	00000
5/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	10	000000000	00000
3/4"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	0000
7/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	0000
1"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	0000
1 1/4"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	00000
1 1/2"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	00000
5/16"-24
1/2"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	00000
5/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	00000
3/4"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	0000
7/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	0000
1"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	0000
1 1/4"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	00000
1 1/2"	Fully Threaded	__	1"	13/32"	32° to 180°	Black, Red	5	000000000	00000

Metric Knurled Plastic-Head Thumb Screws

A knurled head allows for slip-resistant controlled adjustment. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. Length is measured from under the head.

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

	Head
Lg., mm	Dia., mm	Ht., mm	Temperature Range, °F	Choose a Head Color	Pkg. Qty.		Pkg.
18-8 Stainless Steel
M3 × 0.5 mm
6	9.6	4.4	32° to 180°	Black, Gray, Red, Yellow	10	000000000	00000
8	9.6	4.4	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
10	9.6	4.4	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
12	9.6	4.4	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
16	9.6	4.4	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
20	9.6	4.4	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
M4 × 0.7 mm
6	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
8	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
10	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
12	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
16	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
20	13	5.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
M5 × 0.8 mm
8	16	6.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
10	16	6.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
12	16	6.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
16	16	6.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
20	16	6.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
25	16	6.5	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
M6 × 1 mm
10	19	7.6	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
10	26	7.8	32° to 180°	Black, Red	10	000000000	00000
12	19	7.6	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
12	26	7.8	32° to 180°	Black, Red	10	000000000	00000
16	19	7.6	32° to 180°	Black, Gray, Red, Yellow	10	000000000	0000
16	26	7.8	32° to 180°	Black, Gray, Red	10	000000000	00000
20	19	7.6	32° to 180°	Black, Gray, Red, Yellow	10	000000000	00000
20	26	7.8	32° to 180°	Black, Gray, Red	10	000000000	00000
25	19	7.6	32° to 180°	Black, Gray, Red, Yellow	10	000000000	00000
25	26	7.8	32° to 180°	Black, Gray, Red, Yellow	10	000000000	00000
M8 × 1.25 mm
12	26	9.8	32° to 180°	Black, Gray, Red	5	000000000	0000
16	26	9.8	32° to 180°	Black, Gray, Red, Yellow	5	000000000	0000
20	26	9.8	32° to 180°	Black, Gray, Red, Yellow	5	000000000	0000
25	26	9.8	32° to 180°	Black, Yellow	5	000000000	0000
30	26	9.8	32° to 180°	Black, Gray, Red	5	000000000	00000

Large-Grip Plastic-Head Thumb Screws

These thumb screws have a large head that allows you to grip them with your entire hand for greater torque while tightening than standard knurled plastic-head thumb screws. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. Length is measured from under the head.

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

			Head
Lg.	Threading	Min. Thread Lg.	Dia.	Ht.	Temperature Range, °F	Color	Pkg. Qty.		Pkg.
18-8 Stainless Steel
1/4"-20
3/8"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	000000
1/2"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
5/8"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
3/4"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
7/8"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
1"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
1 1/4"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
1 1/2"	Partially Threaded	1"	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
1 3/4"	Partially Threaded	1"	1 1/2"	15/32"	32° to 180°	Black	5	000000000	0000
2"	Partially Threaded	1"	1 1/2"	15/32"	32° to 180°	Black	5	000000000	0000
1/4"-28
3/8"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
1/2"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
5/8"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
3/4"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
7/8"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
1"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
1 1/4"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	10	000000000	00000
5/16"-18
1/2"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	10	000000000	00000
5/8"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	0000
3/4"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	0000
7/8"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	0000
1"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
1 1/4"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
1 1/2"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
5/16"-24
1/2"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
5/8"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
3/4"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
7/8"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
1"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
1 1/4"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
1 1/2"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000
3/8"-16
3/4"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	5	000000000	00000
7/8"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	5	000000000	00000
1"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	5	000000000	00000
1 1/4"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	5	000000000	00000
1 1/2"	Fully Threaded	__	1 1/2"	15/32"	32° to 180°	Black	5	000000000	00000

Metric Large-Grip Plastic-Head Thumb Screws

A large head allows you to grip these screws with your entire hand for greater torque while tightening than standard knurled plastic-head thumb screws. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. Length is measured from under the head.

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

	Head
Lg., mm	Dia., mm	Ht., mm	Temperature Range, °F	Color	Pkg. Qty.		Pkg.
18-8 Stainless Steel
M6 × 1 mm
10	38	12.2	32° to 180°	Black	10	000000000	000000
12	38	12.2	32° to 180°	Black	10	000000000	00000
16	38	12.2	32° to 180°	Black	10	000000000	00000
20	38	12.2	32° to 180°	Black	10	000000000	00000
25	38	12.2	32° to 180°	Black	10	000000000	00000
M8 × 1.25 mm
12	38	10	32° to 180°	Black	5	000000000	00000
16	38	10	32° to 180°	Black	5	000000000	0000
20	38	10	32° to 180°	Black	5	000000000	00000
25	38	10	32° to 180°	Black	5	000000000	00000

Two-Arm Plastic-Head Thumb Screws

Arms provide a flat surface to push your fingers against. Length is measured from under the head.

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

			Head
Lg.	Threading	Min. Thread Lg.	Wd.	Ht.	Temperature Range, °F	Color	Pkg. Qty.		Pkg.
18-8 Stainless Steel
10-24
1/2"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	25	000000000	000000
5/8"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	25	000000000	00000
3/4"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	25	000000000	00000
1"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	10	000000000	0000
10-32
3/8"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	25	000000000	00000
1/2"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	25	000000000	00000
5/8"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	25	000000000	00000
3/4"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	25	000000000	00000
7/8"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	10	000000000	0000
1"	Fully Threaded	__	1"	1/4"	32° to 180°	Black	10	000000000	0000
1 1/2"	Partially Threaded	0.875"	1"	1/4"	32° to 180°	Black	10	000000000	00000
1/4"-20
3/8"	Fully Threaded	__	1 1/4"	5/16"	32° to 180°	Black	10	000000000	0000
1/2"	Fully Threaded	__	1 1/4"	5/16"	32° to 180°	Black	10	000000000	0000
5/8"	Fully Threaded	__	1 1/4"	5/16"	32° to 180°	Black	10	000000000	0000
3/4"	Fully Threaded	__	1 1/4"	5/16"	32° to 180°	Black	10	000000000	00000
7/8"	Fully Threaded	__	1 1/4"	5/16"	32° to 180°	Black	10	000000000	00000
1"	Fully Threaded	__	1 1/4"	5/16"	32° to 180°	Black	10	000000000	00000
1 1/4"	Fully Threaded	__	1 1/4"	5/16"	32° to 180°	Black	10	000000000	00000
1 1/2"	Partially Threaded	1"	1 1/4"	5/16"	32° to 180°	Black	10	000000000	00000
2"	Partially Threaded	1"	1 1/4"	5/16"	32° to 180°	Black	5	000000000	0000
5/16"-18
1/2"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	10	000000000	00000
5/8"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	10	000000000	00000
3/4"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	0000
7/8"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	0000
1"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	0000
1 1/4"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	0000
1 1/2"	Fully Threaded	__	1 1/2"	13/32"	32° to 180°	Black	5	000000000	00000

Plastic-Head Thumb Screws with Hex Drive

Tighten these thumb screws by hand or with a hex key for more torque. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the head.

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

			Head
Lg.	Threading	Min. Thread Lg.	Dia.	Ht.	Temperature Range, °F	Color	Pkg. Qty.		Pkg.
18-8 Stainless Steel
4-40
9/32"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black	25	000000000	000000
13/32"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black	25	000000000	00000
17/32"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black	25	000000000	00000
21/32"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black	10	000000000	0000
25/32"	Fully Threaded	__	5/16"	11/64"	32° to 180°	Black	10	000000000	0000
29/32"	Partially Threaded	3/4"	5/16"	11/64"	32° to 180°	Black	10	000000000	0000
6-32
9/32"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black	10	000000000	0000
13/32"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black	10	000000000	0000
17/32"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black	10	000000000	0000
21/32"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black	10	000000000	0000
25/32"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black	10	000000000	0000
29/32"	Fully Threaded	__	3/8"	3/16"	32° to 180°	Black	10	000000000	0000
8-32
9/32"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black	10	000000000	0000
13/32"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black	10	000000000	0000
17/32"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black	10	000000000	0000
21/32"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black	10	000000000	0000
25/32"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black	10	000000000	0000
29/32"	Fully Threaded	__	1/2"	7/32"	32° to 180°	Black	10	000000000	0000
10-24
3/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
1/2"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
5/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
3/4"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
7/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
1 1/8"	Partially Threaded	7/8"	5/8"	1/4"	32° to 180°	Black	10	000000000	00000
10-32
3/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
1/2"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
5/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
3/4"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	0000
7/8"	Fully Threaded	__	5/8"	1/4"	32° to 180°	Black	10	000000000	00000
1 1/8"	Partially Threaded	7/8"	5/8"	1/4"	32° to 180°	Black	10	000000000	00000
1/4"-20
3/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
1/2"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
5/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
3/4"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
7/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
1 1/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
1 3/8"	Partially Threaded	1"	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
1/4"-28
3/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
1/2"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
5/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
3/4"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
7/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
1 1/8"	Fully Threaded	__	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
1 3/8"	Partially Threaded	1"	3/4"	5/16"	32° to 180°	Black	10	000000000	00000
5/16"-18
1/2"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	0000
5/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	0000
3/4"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
7/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
1 1/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
1 3/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
5/16"-24
1/2"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
5/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
3/4"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
7/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
1 1/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000
1 3/8"	Fully Threaded	__	1"	13/32"	32° to 180°	Black	5	000000000	00000

Ultra-Fine-Thread Plastic-Head Thumb Screws

Fine threads give you precise control. They have a ball bearing tip that adjusts to angled surfaces and minimizes damage from surface contact. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the head.

Optional threaded inserts can be used to install these thumb screws into existing holes.

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

Thumb Screws

		Head
Lg.	Tip Dia.	Dia.	Ht.	Max. Temperature, °F	Color	Tensile Strength, psi		Each
18-8 Stainless Steel
3/16"-100
3/4"	1/8"	3/8"	7/16"	180°	Black	60,000	000000000	000000
1"	1/8"	3/8"	7/16"	180°	Black	60,000	000000000	00000
1 1/4"	1/8"	3/8"	7/16"	180°	Black	60,000	000000000	00000
1 1/2"	1/8"	3/8"	7/16"	180°	Black	60,000	000000000	00000
1 3/4"	1/8"	3/8"	7/16"	180°	Black	60,000	000000000	00000
1/4"-80
3/4"	3/16"	1/2"	3/4"	180°	Black	60,000	000000000	00000
1"	3/16"	1/2"	3/4"	180°	Black	60,000	000000000	0000
1 1/4"	3/16"	1/2"	3/4"	180°	Black	60,000	000000000	0000
1 1/2"	3/16"	1/2"	3/4"	180°	Black	60,000	000000000	0000
2"	3/16"	1/2"	3/4"	180°	Black	60,000	000000000	00000
3"	3/16"	1/2"	3/4"	180°	Black	60,000	000000000	00000
3 1/2"	3/16"	1/2"	3/4"	180°	Black	60,000	000000000	00000

Optional Threaded Inserts

Threaded Inserts

	Flange
Installed Lg.	Dia.	Thick.	For Max. Hole Dia.	Drill Bit Size		Each
Brass
3/16"-100
5/16"	0.29"	0.01"	1/4"	1/4"	000000000	00000
7/16"	0.29"	0.01"	1/4"	1/4"	000000000	0000
5/8"	0.29"	0.01"	1/4"	1/4"	000000000	0000
3/4"	0.29"	0.01"	1/4"	1/4"	000000000	0000
1/4"-80
5/16"	0.352"	0.01"	5/16"	5/16"	000000000	0000
7/16"	0.352"	0.01"	5/16"	5/16"	000000000	0000
5/8"	0.352"	0.01"	5/16"	5/16"	000000000	0000
3/4"	0.352"	0.01"	5/16"	5/16"	000000000	0000