Acetal-Head Screws | McMaster-Carr

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EAR99

DFARS Specialty Metals

245 Products

About Thumb Screw and Binding Post Materials

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.

	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

Knurled Plastic-Head Thumb Screws

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.

			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

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.

			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.

	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

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.

			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

Two-Arm Plastic-Head Thumb Screws

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

			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

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.

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

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About Thumb Screw and Binding Post Materials

Metric Knurled Plastic-Head Thumb Screws

Knurled Plastic-Head Thumb Screws

Large-Grip Plastic-Head Thumb Screws

Metric Large-Grip Plastic-Head Thumb Screws

Plastic-Head Thumb Screws with Hex Drive

Two-Arm Plastic-Head Thumb Screws

Ultra-Fine-Thread Plastic-Head Thumb Screws