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About Socket Head Screws
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Nylon-Tip Alloy Steel Socket Head Screws
Fully Threaded
Partially Threaded
Nonconductive and softer than brass, the nylon tip reduces vibration and eliminates damage from metal touching metal. Screws are alloy steel with a tensile strength of 180,000 psi, making them stronger than Grade 8 steel screws. Their black-oxide finish provides mild corrosion resistance in dry environments. All meet ASME B18.3 and ASTM A574 for dimensional standards and 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.
For technical drawings and 3-D models, click on a part number.
Head | Tip | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Dia. | Ht. | Drive Size | Dia. | Lg. | Temp. Range, °F | 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" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 1/16" | 1/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
8-32 | |||||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
10-32 | |||||||||||||
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 3/32" | 3/64" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
1/4"-20 | |||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 3/8" | 1/4" | 3/16" | 1/8" | 1/16" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
3/8"-16 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 3/16" | 3/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
5/16"-18 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 3/16" | 3/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 3/16" | 3/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 3/16" | 3/32" | -50° to 250° | 180,000 | ASME B18.3, ASTM A574 | 000000000 | 0000 |