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About Socket Head Screws
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High-Strength A286 Stainless Steel Socket Head Screws
Fully Threaded
Partially Threaded
Often used to fasten parts in engines and turbines, these are our strongest stainless steel screws. They are comparable in strength to alloy steel with the corrosion resistance of 18-8 stainless steel. Screws are nonmagnetic. Length is measured from under the head. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
Screws that meet Fed. Spec. FF-S-86 and ISO 4762 (formerly DIN 912) comply with specifications for dimensional standards.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Yield Strength, psi | Specifications Met | Each | |
A286 Stainless Steel | |||||||||||
0-80 | |||||||||||
| 1/8" | Fully Threaded | __ | Fine | 0.096" | 0.06" | 0.050" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N00-2, SAE AMS5737 | 000000000 | 00000 |
| 3/16" | Fully Threaded | __ | Fine | 0.096" | 0.06" | 0.050" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N00-3, SAE AMS5737 | 000000000 | 0000 |
| 1/4" | Fully Threaded | __ | Fine | 0.096" | 0.06" | 0.050" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N00-4, SAE AMS5737 | 000000000 | 0000 |
| 5/16" | Fully Threaded | __ | Fine | 0.096" | 0.06" | 0.050" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N00-5, SAE AMS5737 | 000000000 | 0000 |
| 3/8" | Fully Threaded | __ | Fine | 0.096" | 0.06" | 0.050" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N00-6, SAE AMS5737 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Fine | 0.096" | 0.06" | 0.050" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N00-8, SAE AMS5737 | 000000000 | 0000 |
10-32 | |||||||||||
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N3-6, SAE AMS5737 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N3-8, SAE AMS5737 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N3-10, SAE AMS5737 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N3-12, SAE AMS5737 | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N3-14, SAE AMS5737 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N3-16, SAE AMS5737 | 000000000 | 0000 |
| 1 1/4" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 160,000 | 120,000 | Fed. Spec. FF-S-86, NAS1351N3-20, SAE AMS5737 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1.12" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-24, SAE AMS5731, SAE AMS5737 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 0.87" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-28, SAE AMS5731, SAE AMS5737 | 000000000 | 00000 |
| 2" | Partially Threaded | 1.12" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-32, SAE AMS5731, SAE AMS5737 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | 0.87" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-36, SAE AMS5731, SAE AMS5737 | 000000000 | 0000 |
| 2 1/2" | Partially Threaded | 1.12" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-40, SAE AMS5731, SAE AMS5737 | 000000000 | 00000 |
| 2 3/4" | Partially Threaded | 0.87" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-44, SAE AMS5731, SAE AMS5737 | 000000000 | 00000 |
| 3" | Partially Threaded | 1.12" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-48, SAE AMS5731, SAE AMS5737 | 000000000 | 00000 |
| 4" | Partially Threaded | 1.12" | Fine | 5/16" | 3/16" | 5/32" | 160,000 | 120,000 | ASME B18.3, NAS1351N3-64, SAE AMS5731, SAE AMS5737 | 000000000 | 00000 |