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Head Height Head Height |
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Head Width Head Width |
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Hardness Hardness |
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Tensile Strength Tensile Strength |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (DefenseAcquisition Regulations Supplement)  |
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About Thumb Screw and Binding Post Materials
More
Steel Spade-Head Thumb Screws
Length is measured from under the head.
Zinc-plated thumb screws are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
Head | |||||||
|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Tensile Strength, psi | Hardness | Pkg. Qty. | Pkg. | |
Steel | |||||||
6-32 | |||||||
| 1/4" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 000000 |
| 3/8" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1/2" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 3/4" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
8-32 | |||||||
| 3/8" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1/2" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 3/4" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
10-24 | |||||||
| 3/8" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1/2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 3/4" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1 1/2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 0000 |
10-32 | |||||||
| 3/8" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1/2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 3/4" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 50 | 000000000 | 00000 |
| 1 1/2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
1/4"-20 | |||||||
| 1/2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 0000 |
| 3/4" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 0000 |
| 1" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 0000 |
| 1 1/4" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 0000 |
| 1 1/2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 2 1/2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 3" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
1/4"-28 | |||||||
| 1/2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 3/4" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
5/16"-18 | |||||||
| 1/2" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 3/4" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1 1/4" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1 1/2" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 2" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
5/16"-24 | |||||||
| 3/4" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 00000 |
| 1 1/2" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 00000 |
3/8"-16 | |||||||
| 3/4" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1 1/4" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1 1/2" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 2" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 3" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 00000 |
Zinc-Plated Steel | |||||||
6-32 | |||||||
| 3/8" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1/2" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 3/4" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1" | 3/8" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
8-32 | |||||||
| 3/8" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1/2" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 3/4" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1" | 15/32" | 1/4" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
10-24 | |||||||
| 3/8" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1/2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 3/4" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
10-32 | |||||||
| 3/8" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1/2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 3/4" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1 1/2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 2" | 9/16" | 3/8" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
1/4"-20 | |||||||
| 1/2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 3/4" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1 1/4" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 1 1/2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
| 2" | 23/32" | 1/2" | 40,000 | Rockwell B55 | 25 | 000000000 | 00000 |
5/16"-18 | |||||||
| 1/2" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 3/4" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1 1/4" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1 1/2" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 2" | 7/8" | 11/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
3/8"-16 | |||||||
| 3/4" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 0000 |
| 1" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 00000 |
| 1 1/4" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 00000 |
| 1 1/2" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 00000 |
| 2" | 1 3/32" | 13/16" | 40,000 | Rockwell B55 | 10 | 000000000 | 00000 |
Metric Iron Spade-Head Thumb Screws
These thumb screws have a zinc plating to resist corrosion in wet environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Stainless Steel Spade-Head Thumb Screws
Made from 18-8 stainless steel, these thumb screws are chemical resistant and may be mildly magnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||
|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||
8-32 | |||||
| 3/8" | 15/32" | 1/4" | 10 | 000000000 | 00000 |
| 1/2" | 15/32" | 1/4" | 10 | 000000000 | 0000 |
| 5/8" | 15/32" | 1/4" | 5 | 000000000 | 0000 |
| 3/4" | 15/32" | 1/4" | 5 | 000000000 | 0000 |
| 1" | 15/32" | 1/4" | 5 | 000000000 | 0000 |
10-24 | |||||
| 3/8" | 9/16" | 3/8" | 10 | 000000000 | 0000 |
| 1/2" | 9/16" | 3/8" | 10 | 000000000 | 0000 |
| 3/4" | 9/16" | 3/8" | 5 | 000000000 | 0000 |
| 1" | 9/16" | 3/8" | 5 | 000000000 | 0000 |
| 1 1/2" | 9/16" | 3/8" | 5 | 000000000 | 0000 |
10-32 | |||||
| 3/8" | 9/16" | 3/8" | 10 | 000000000 | 0000 |
| 1/2" | 9/16" | 3/8" | 10 | 000000000 | 0000 |
| 3/4" | 9/16" | 3/8" | 5 | 000000000 | 0000 |
| 1" | 9/16" | 3/8" | 5 | 000000000 | 0000 |
| 1 1/2" | 9/16" | 3/8" | 5 | 000000000 | 0000 |
1/4"-20 | |||||
| 3/8" | 23/32" | 1/2" | 5 | 000000000 | 0000 |
| 1/2" | 23/32" | 1/2" | 10 | 000000000 | 00000 |
| 5/8" | 23/32" | 1/2" | 5 | 000000000 | 0000 |
| 3/4" | 23/32" | 1/2" | 5 | 000000000 | 0000 |
| 1" | 23/32" | 1/2" | 5 | 000000000 | 0000 |
| 1 1/4" | 23/32" | 1/2" | 5 | 000000000 | 0000 |
| 1 1/2" | 23/32" | 1/2" | 5 | 000000000 | 0000 |
| 2" | 23/32" | 1/2" | 5 | 000000000 | 0000 |
5/16"-18 | |||||
| 1/2" | 7/8" | 11/16" | 5 | 000000000 | 00000 |
| 3/4" | 7/8" | 11/16" | 5 | 000000000 | 00000 |
| 1" | 7/8" | 11/16" | 5 | 000000000 | 00000 |
| 1 1/4" | 7/8" | 11/16" | 5 | 000000000 | 00000 |
| 1 1/2" | 7/8" | 11/16" | 5 | 000000000 | 00000 |
| 2" | 7/8" | 11/16" | 1 | 000000000 | 0000 |
3/8"-16 | |||||
| 3/4" | 1 1/32" | 13/16" | 1 | 000000000 | 0000 |
| 1" | 1 1/32" | 13/16" | 1 | 000000000 | 0000 |
| 1 1/4" | 1 1/32" | 13/16" | 1 | 000000000 | 0000 |
| 1 1/2" | 1 1/32" | 13/16" | 1 | 000000000 | 0000 |
| 2" | 1 1/32" | 13/16" | 1 | 000000000 | 0000 |
Brass Spade-Head Thumb Screws
These thumb screws are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||
|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Tensile Strength, psi | Hardness | Pkg. Qty. | Pkg. | |
Brass | |||||||
10-24 | |||||||
| 1/2" | 9/16" | 3/8" | 50,000 | Rockwell B40 | 5 | 000000000 | 00000 |
| 3/4" | 9/16" | 3/8" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
| 1" | 9/16" | 3/8" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
10-32 | |||||||
| 1/2" | 9/16" | 3/8" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
| 3/4" | 9/16" | 3/8" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
| 1" | 9/16" | 3/8" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
1/4"-20 | |||||||
| 1/2" | 23/32" | 1/2" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
| 3/4" | 23/32" | 1/2" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
| 1" | 23/32" | 1/2" | 50,000 | Rockwell B40 | 5 | 000000000 | 0000 |
| 1 1/2" | 23/32" | 1/2" | 50,000 | Rockwell B40 | 5 | 000000000 | 00000 |
| 2" | 23/32" | 1/2" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
5/16"-18 | |||||||
| 3/4" | 7/8" | 11/16" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
| 1" | 7/8" | 11/16" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
| 1 1/2" | 7/8" | 11/16" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
| 2" | 7/8" | 11/16" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
3/8"-16 | |||||||
| 1" | 1 3/32" | 13/16" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
| 1 1/2" | 1 3/32" | 13/16" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
| 2" | 1 3/32" | 13/16" | 50,000 | Rockwell B40 | 1 | 000000000 | 0000 |
Sanitary Spade-Head Thumb Screws
Fasten material by hand, so tools don’t scratch or contaminate parts you frequently adjust in food-processing or pharmaceutical plants. Made from 316 stainless steel, these thumb screws won’t corrode from frequent washdowns with water or harsh cleaners. They have self-draining surfaces, which means there are no horizontal ledges, so liquid and food will run off completely. The smooth, polished sides and rounded edges minimize spots where bacteria could grow.
For technical drawings and 3-D models, click on a part number.
Soft-Tip Thumb Screws
A soft nylon tip conforms to textured surfaces and minimizes damage when holding items in place. These screws are zinc-plated steel for corrosion resistance in wet environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Tip | Head | |||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Lg. | Wd. | Ht. | Tensile Strength, psi | Hardness | Each | |
Zinc-Plated Steel | ||||||||
6-32 | ||||||||
| 1/2" | 1/16" | 1/32" | 13/32" | 19/64" | 40,000 | Rockwell B71 | 000000000 | 00000 |
8-32 | ||||||||
| 1/2" | 3/32" | 3/64" | 7/16" | 19/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 3/4" | 3/32" | 3/64" | 7/16" | 19/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
10-32 | ||||||||
| 1/2" | 3/32" | 3/64" | 35/64" | 7/16" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 3/4" | 3/32" | 3/64" | 35/64" | 7/16" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 1" | 3/32" | 3/64" | 35/64" | 7/16" | 40,000 | Rockwell B71 | 000000000 | 0000 |
1/4"-20 | ||||||||
| 1/2" | 1/8" | 1/16" | 13/16" | 35/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 3/4" | 1/8" | 1/16" | 13/16" | 35/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 1" | 1/8" | 1/16" | 13/16" | 35/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
5/16"-18 | ||||||||
| 1/2" | 3/16" | 3/32" | 7/8" | 43/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 3/4" | 3/16" | 3/32" | 7/8" | 43/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 1" | 3/16" | 3/32" | 7/8" | 43/64" | 40,000 | Rockwell B71 | 000000000 | 0000 |
3/8"-16 | ||||||||
| 1" | 3/16" | 3/32" | 1 1/64" | 3/4" | 40,000 | Rockwell B71 | 000000000 | 0000 |
| 1 1/2" | 3/16" | 3/32" | 1 1/64" | 3/4" | 40,000 | Rockwell B71 | 000000000 | 00000 |