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About Socket Head Screws
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Brass-Tip Alloy Steel Socket Head Screws
Electrically conductive and soft enough to grip textured and curved surfaces, the nonmarring brass tip reduces damage from metal-on-metal contact. Screws are alloy steel and their black-oxide finish provides mild corrosion resistance in dry environments. All meet ASTM A574 for material quality.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
Head | Tip | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Dia. | Ht. | Drive Size | Dia. | Lg. | Tensile Strength, psi | Specifications Met | Each | |
Black-Oxide Alloy Steel | ||||||||||||
6-32 | ||||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 1/16" | 1/32" | 170,000 | ASTM A574 | 000000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 1/16" | 1/32" | 170,000 | ASTM A574 | 000000000 | 0000 |
8-32 | ||||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
10-32 | ||||||||||||
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | 170,000 | ASTM A574 | 000000000 | 0000 |
1/4"-20 | ||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | 170,000 | ASTM A574 | 000000000 | 0000 |
5/16"-18 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 3/16" | 3/32" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 3/16" | 3/32" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 3/16" | 3/32" | 170,000 | ASTM A574 | 000000000 | 0000 |
3/8"-16 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | 170,000 | ASTM A574 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | 170,000 | ASTM A574 | 000000000 | 0000 |