Threading Threading |
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 | Partially Threaded |
 | Fully Threaded |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Hex Head Screws and Bolts
More
Low-Strength Grade A Steel Square Head Screws
Partially Threaded
Fully Threaded
About half the strength of medium-strength screws, these screws can be used for light duty fastening applications, such as securing access panels. Large flat sides make them easy to grip with a wrench and keep them from rotating in square holes. Material meets ASTM A307 specifications for quality. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Screws | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Nuts | |||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Pkg. | ||
ASTM Grade A Steel | ||||||||||||
1/4"-20 | ||||||||||||
| 1" | Partially Threaded | 3/4" | Coarse | 3/8" | 11/64" | 60,000 | ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 000000 |
| 1 1/4" | Partially Threaded | 3/4" | Coarse | 3/8" | 11/64" | 60,000 | ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 3/8" | 11/64" | 60,000 | ASTM A307 | 50 | 000000000 | 00000 | 000000000 | 00000 |
| 2" | Partially Threaded | 3/4" | Coarse | 3/8" | 11/64" | 60,000 | ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
5/16"-18 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 60,000 | ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 60,000 | ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/4" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 60,000 | ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 4" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
3/8"-16 | ||||||||||||
| 1" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/4" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 0000 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
1/2"-13 | ||||||||||||
| 1" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 4" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 5" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 6" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 8" | Partially Threaded | 1 1/2" | Coarse | 3/4" | 21/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
5/8"-11 | ||||||||||||
| 2" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 5 | 000000000 | 00000 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 4" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 5" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 6" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 7" | Partially Threaded | 1 3/4" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 11" | Partially Threaded | 1 3/4" | Coarse | 15/16" | 27/64" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
3/4"-10 | ||||||||||||
| 2 1/2" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 3 3/4" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 4" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 5" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 5 1/2" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 6" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 7" | Partially Threaded | 2" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 8" | Partially Threaded | 2" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 9" | Partially Threaded | 2" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 0000 | 000000000 | 00000 |
| 10" | Partially Threaded | 2" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 12" | Partially Threaded | 2" | Coarse | 1 1/8" | 1/2" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
1"-8 | ||||||||||||
| 6" | Partially Threaded | 2 1/4" | Coarse | 1 1/2" | 21/32" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 7" | Partially Threaded | 2 1/2" | Coarse | 1 1/2" | 21/32" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 9" | Partially Threaded | 2 1/2" | Coarse | 1 1/2" | 21/32" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |
| 10" | Partially Threaded | 2 1/2" | Coarse | 1 1/2" | 21/32" | 60,000 | ASTM A307 | 1 | 000000000 | 00000 | 000000000 | 00000 |