Head Type Head Type |
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![]() | Flat |
System of Measurement System of Measurement |
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For Material Thickness For Material Thickness |
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Material Material |
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Screw Drive Style Screw Drive Style |
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| Hex | |
Barrel Drive Style Barrel Drive Style |
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| Hex | |
Threading Threading |
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| Fully Threaded | |
Thread Type Thread Type |
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Thread Spacing Thread Spacing |
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Hardness Hardness |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Thumb Screw and Binding Post Materials
More
Flat Head Binding Barrels and Screws

Angled under the head for a flush finish in countersunk holes. Made from 18-8 stainless steel, these screws are chemical resistant and may be mildly magnetic. Barrel length and screw length are measured from under the head.
For technical drawings and 3-D models, click on a part number.
Barrel | Screw | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Material Thick. | Lg. | Dia. | Head Dia. | Head Ht. | Thread Dp. | Drive Size | Lg. | Head Dia. | Head Ht. | Drive Size | Countersink Angle | Each | |
18-8 Stainless Steel | |||||||||||||
10-24 | |||||||||||||
| 11/16" to 3/4" | 5/16" | 1/4" | 33/64" | 11/64" | 5/16" | 5/32" | 5/32" | 33/64" | 11/64" | 5/32" | 82° | 000000000 | 000000 |
| 15/16" to 1" | 9/16" | 1/4" | 33/64" | 11/64" | 3/8" | 5/32" | 5/32" | 33/64" | 11/64" | 5/32" | 82° | 000000000 | 00000 |
| 1 1/4" to 1 1/2" | 13/16" | 1/4" | 33/64" | 11/64" | 3/8" | 5/32" | 25/64" | 33/64" | 11/64" | 5/32" | 82° | 000000000 | 00000 |
| 1 1/2" to 1 3/4" | 1 1/16" | 1/4" | 33/64" | 11/64" | 3/8" | 5/32" | 25/64" | 33/64" | 11/64" | 5/32" | 82° | 000000000 | 00000 |
| 1 1/2" to 2" | 1 1/16" | 1/4" | 33/64" | 11/64" | 3/8" | 5/32" | 49/64" | 33/64" | 11/64" | 5/32" | 82° | 000000000 | 00000 |
1/4"-20 | |||||||||||||
| 1" to 1 1/8" | 1/4" | 3/8" | 3/4" | 15/64" | 3/16" | 7/32" | 7/16" | 3/4" | 15/64" | 7/32" | 82° | 000000000 | 00000 |
| 1 1/8" to 1 1/4" | 1/2" | 3/8" | 3/4" | 15/64" | 3/8" | 7/32" | 7/16" | 3/4" | 15/64" | 7/32" | 82° | 000000000 | 00000 |
| 1 3/8" to 1 1/2" | 3/4" | 3/8" | 3/4" | 15/64" | 3/8" | 7/32" | 7/16" | 3/4" | 15/64" | 7/32" | 82° | 000000000 | 00000 |
3/8"-16 | |||||||||||||
| 1 1/8" to 1 1/4" | 1/2" | 1/2" | 7/8" | 1/4" | 3/8" | 5/16" | 3/8" | 7/8" | 1/4" | 5/16" | 82° | 000000000 | 00000 |
| 1 3/8" to 1 1/2" | 3/4" | 1/2" | 7/8" | 1/4" | 1/2" | 5/16" | 3/8" | 7/8" | 1/4" | 5/16" | 82° | 000000000 | 00000 |
| 1 7/8" to 2" | 1 1/4" | 1/2" | 7/8" | 1/4" | 1/2" | 5/16" | 3/8" | 7/8" | 1/4" | 5/16" | 82° | 000000000 | 00000 |
| 2 3/8" to 2 1/2" | 1 3/4" | 1/2" | 7/8" | 1/4" | 1/2" | 5/16" | 3/8" | 7/8" | 1/4" | 5/16" | 82° | 000000000 | 00000 |
| 3 3/8" to 3 1/2" | 2 3/4" | 1/2" | 7/8" | 1/4" | 1/2" | 5/16" | 3/8" | 7/8" | 1/4" | 5/16" | 82° | 000000000 | 00000 |
1/2"-13 | |||||||||||||
| 1 3/8" to 1 1/2" | 1/2" | 5/8" | 1" | 1/4" | 3/8" | 3/8" | 3/4" | 1" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 1 3/8" to 1 5/8" | 3/4" | 5/8" | 1" | 1/4" | 5/8" | 3/8" | 3/4" | 1" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 1 3/4" to 2" | 1 1/4" | 5/8" | 1" | 1/4" | 3/4" | 3/8" | 3/4" | 1" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 2" to 2 1/4" | 1 1/2" | 5/8" | 1" | 1/4" | 3/4" | 3/8" | 3/4" | 1" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 2 1/4" to 2 1/2" | 1 3/4" | 5/8" | 1" | 1/4" | 3/4" | 3/8" | 3/4" | 1" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 2 3/4" to 3" | 2 1/4" | 5/8" | 1" | 1/4" | 3/4" | 3/8" | 3/4" | 1" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 3 1/4" to 3 1/2" | 2 3/4" | 5/8" | 1" | 1/4" | 3/4" | 3/8" | 3/4" | 1" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
5/8"-11 | |||||||||||||
| 1 3/8" to 1 1/2" | 1/2" | 3/4" | 1 1/8" | 1/4" | 3/8" | 3/8" | 3/4" | 1 1/8" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 1 3/8" to 1 5/8" | 3/4" | 3/4" | 1 1/8" | 1/4" | 5/8" | 3/8" | 3/4" | 1 1/8" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 1 3/4" to 2" | 1 1/4" | 3/4" | 1 1/8" | 1/4" | 3/4" | 3/8" | 3/4" | 1 1/8" | 1/4" | 3/8" | 82° | 000000000 | 00000 |
| 2" to 2 1/4" | 1 1/2" | 3/4" | 1 1/8" | 1/4" | 3/4" | 3/8" | 3/4" | 1 1/8" | 1/4" | 3/8" | 82° | 000000000 | 00000 |

































