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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.
Stainless Steel Hex Head Screws
 |  |
Fully Threaded | Partially Threaded |
Won't rust or corrode when exposed to moisture and chemicals. 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.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel screws can.
Head | United States Origin | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Mil. Spec. | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | |||||||||||
1/4"-28 | |||||||||||
| 1/2" | 7/16" | 5/32" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-303 | 10 | 92245A561 | 00000 | ||
| 9/16" | 7/16" | 5/32" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-304 | 10 | 92245A934 | 0000 | ||
| 5/8" | 7/16" | 5/32" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-305 | 10 | 92245A563 | 0000 | ||
| 3/4" | 7/16" | 5/32" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-306 | 10 | 92245A565 | 0000 | ||
| 7/8" | 7/16" | 5/32" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-307 | 10 | 92245A564 | 0000 | ||
| 1" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-308 | 10 | 92245A567 | 0000 | ||
| 1 1/8" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-309 | 10 | 92245A568 | 0000 | ||
| 1 1/4" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-310 | 10 | 92245A569 | 00000 | ||
| 1 3/8" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-311 | 10 | 92245A935 | 0000 | ||
| 1 1/2" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-312 | 10 | 92245A571 | 00000 | ||
| 1 3/4" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-313 | 10 | 92245A572 | 00000 | ||
| 2" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-314 | 5 | 92245A574 | 0000 | ||
| 2 1/4" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-315 | 5 | 92245A936 | 0000 | ||
| 2 1/2" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-316 | 5 | 92245A937 | 0000 | ||
| 3" | 7/16" | 5/32" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-318 | 5 | 92245A939 | 0000 | ||
5/16"-24 | |||||||||||
| 5/8" | 1/2" | 13/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-331 | 10 | 92245A942 | 00000 | ||
| 3/4" | 1/2" | 13/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-332 | 5 | 92245A600 | 0000 | ||
| 7/8" | 1/2" | 13/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-333 | 5 | 92245A943 | 0000 | ||
| 1" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-334 | 5 | 92245A602 | 0000 | ||
| 1 1/8" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-335 | 5 | 92245A944 | 0000 | ||
| 1 1/4" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-336 | 5 | 92245A604 | 0000 | ||
| 1 3/8" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-337 | 5 | 92245A945 | 0000 | ||
| 1 1/2" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-338 | 5 | 92245A606 | 0000 | ||
| 1 3/4" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-339 | 5 | 92245A946 | 0000 | ||
| 2" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-340 | 1 | 92245A608 | 0000 | ||
| 2 1/4" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-341 | 1 | 92245A947 | 0000 | ||
| 2 1/2" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-342 | 1 | 92245A948 | 0000 | ||
| 2 3/4" | 1/2" | 13/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-343 | 1 | 92245A949 | 0000 | ||
3/8"-24 | |||||||||||
| 5/8" | 9/16" | 15/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-357 | 5 | 92245A951 | 0000 | ||
| 3/4" | 9/16" | 15/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-358 | 5 | 92245A650 | 0000 | ||
| 7/8" | 9/16" | 15/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-359 | 5 | 92245A952 | 0000 | ||
| 1" | 9/16" | 15/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-360 | 5 | 92245A652 | 00000 | ||
| 1 1/8" | 9/16" | 15/64" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-361 | 1 | 92245A953 | 0000 | ||
| 1 1/4" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-362 | 1 | 92245A654 | 0000 | ||
| 1 3/8" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-363 | 1 | 92245A954 | 0000 | ||
| 1 1/2" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-364 | 1 | 92245A657 | 0000 | ||
| 1 3/4" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-365 | 1 | 92245A659 | 0000 | ||
| 2" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-366 | 1 | 92245A661 | 0000 | ||
| 2 1/4" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-367 | 1 | 92245A955 | 0000 | ||
| 2 1/2" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-368 | 1 | 92245A956 | 0000 | ||
| 3" | 9/16" | 15/64" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-370 | 1 | 92245A957 | 0000 | ||
1/2"-20 | |||||||||||
| 3/4" | 3/4" | 5/16" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-407 | 1 | 92245A958 | 0000 | ||
| 1" | 3/4" | 5/16" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-409 | 1 | 92245A751 | 0000 | ||
| 1 1/8" | 3/4" | 5/16" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-410 | 1 | 92245A959 | 0000 | ||
| 1 1/4" | 3/4" | 5/16" | Fully Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-411 | 1 | 92245A753 | 0000 | ||
| 1 1/2" | 3/4" | 5/16" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-413 | 1 | 92245A755 | 0000 | ||
| 1 3/4" | 3/4" | 5/16" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-414 | 1 | 92245A757 | 0000 | ||
| 2" | 3/4" | 5/16" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-415 | 1 | 92245A961 | 0000 | ||
| 2 1/4" | 3/4" | 5/16" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-416 | 1 | 92245A962 | 0000 | ||
| 2 1/2" | 3/4" | 5/16" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-417 | 1 | 92245A963 | 0000 | ||
| 2 3/4" | 3/4" | 5/16" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-418 | 1 | 92245A966 | 0000 | ||
| 3" | 3/4" | 5/16" | Partially Threaded | Fine | 70,000 | Fed. Spec. FF-S-85, MS35308-419 | 1 | 92245A967 | 00000 | ||
