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About Hex Head Screws and Bolts
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Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.
Mil. Spec. Nickel Hex Head Screws
 |  |
Fully Threaded | Partially Threaded |
Manufactured and tested to meet strict U.S. military specifications for material and construction. Also known as Monel, 400 nickel is as strong as 316 stainless steel and outperforms it in salt water and harsh acids. These screws have a head with six flat sides to keep wrenches and sockets from slipping and rounding off the drive.
Length is measured from under the head.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Mil. Spec. | Each | |||
Ultra-Corrosion-Resistant 400 Nickel | ||||||||||
1/4"-20 | ||||||||||
| 1/2" | 7/16" | 5/32" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A538 | 00000 | ||
| 3/4" | 7/16" | 5/32" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A540 | 0000 | ||
| 1" | 7/16" | 5/32" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A542 | 0000 | ||
| 1 1/2" | 7/16" | 5/32" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A546 | 0000 | ||
| 2" | 7/16" | 5/32" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A548 | 0000 | ||
5/16"-18 | ||||||||||
| 3/4" | 1/2" | 13/64" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A580 | 0000 | ||
| 1" | 1/2" | 13/64" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A583 | 0000 | ||
| 1 1/2" | 1/2" | 13/64" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A587 | 0000 | ||
| 2" | 1/2" | 13/64" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A589 | 00000 | ||
3/8"-16 | ||||||||||
| 1" | 9/16" | 15/64" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A624 | 0000 | ||
| 1 1/4" | 9/16" | 15/64" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A626 | 0000 | ||
| 1 1/2" | 9/16" | 15/64" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A628 | 00000 | ||
| 2" | 9/16" | 15/64" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A630 | 00000 | ||
1/2"-13 | ||||||||||
| 1 1/2" | 3/4" | 5/16" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A716 | 00000 | ||
| 2" | 3/4" | 5/16" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A720 | 00000 | ||
| 2 1/2" | 3/4" | 5/16" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A722 | 00000 | ||
| 3" | 3/4" | 5/16" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A724 | 00000 | ||
5/8"-11 | ||||||||||
| 2" | 15/16" | 25/64" | Fully Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A805 | 00000 | ||
| 2 1/2" | 15/16" | 25/64" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A809 | 00000 | ||
| 3" | 15/16" | 25/64" | Partially Threaded | Coarse | 80,000 | MIL-S-1222 | 90780A813 | 00000 | ||
