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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.
Steel Hex Head Screws
 |  |  |
Fully Threaded | Partially Threaded | SAE Grade 9 |
Our most popular hex head screws. These 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.
Extreme-Strength Fastener—Our strongest hex head screws hold up in your most demanding high-stress applications. They have a tensile strength of 170,000 psi and higher.
Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.
Head | Small Pack | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Threading | Thread Spacing | Fastener Strength Grade/Class | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
Extreme-Strength Zinc-Yellow-Chromate-Plated Steel | |||||||||||
1/4"-20 | |||||||||||
| 1/2" | 7/16" | 3/16" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A109 | 000000 | ||
| 3/4" | 7/16" | 3/16" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A111 | 00000 | ||
| 1" | 7/16" | 3/16" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A113 | 00000 | ||
| 1 1/4" | 7/16" | 3/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A115 | 00000 | ||
| 1 1/2" | 7/16" | 3/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A117 | 00000 | ||
| 2" | 7/16" | 3/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A119 | 00000 | ||
| 2 1/2" | 7/16" | 3/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A121 | 0000 | ||
| 3" | 7/16" | 3/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A122 | 0000 | ||
5/16"-18 | |||||||||||
| 1/2" | 1/2" | 15/64" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A222 | 00000 | ||
| 3/4" | 1/2" | 15/64" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A219 | 00000 | ||
| 1" | 1/2" | 15/64" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A221 | 00000 | ||
| 1 1/4" | 1/2" | 15/64" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 25 | 90201A225 | 00000 | ||
| 1 1/2" | 1/2" | 15/64" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A228 | 0000 | ||
| 2" | 1/2" | 15/64" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A230 | 0000 | ||
| 2 1/2" | 1/2" | 15/64" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A231 | 0000 | ||
| 3" | 1/2" | 15/64" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A232 | 00000 | ||
3/8"-16 | |||||||||||
| 3/4" | 9/16" | 9/32" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A312 | 0000 | ||
| 1" | 9/16" | 9/32" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A314 | 0000 | ||
| 1 1/4" | 9/16" | 9/32" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A316 | 0000 | ||
| 1 1/2" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A319 | 00000 | ||
| 1 3/4" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A321 | 00000 | ||
| 2" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A323 | 00000 | ||
| 2 1/4" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A324 | 00000 | ||
| 2 1/2" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 10 | 90201A327 | 00000 | ||
| 3" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A331 | 0000 | ||
| 3 1/2" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A333 | 00000 | ||
| 4" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A336 | 0000 | ||
| 4 1/2" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A339 | 0000 | ||
| 5" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A342 | 0000 | ||
| 6" | 9/16" | 9/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A345 | 0000 | ||
7/16"-14 | |||||||||||
| 1 1/2" | 5/8" | 21/64" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A360 | 0000 | ||
| 2" | 5/8" | 21/64" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A363 | 0000 | ||
| 3" | 5/8" | 21/64" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A366 | 00000 | ||
| 4" | 5/8" | 21/64" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A369 | 0000 | ||
1/2"-13 | |||||||||||
| 1" | 3/4" | 3/8" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A415 | 0000 | ||
| 1 1/4" | 3/4" | 3/8" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A416 | 00000 | ||
| 1 1/2" | 3/4" | 3/8" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A418 | 00000 | ||
| 1 3/4" | 3/4" | 3/8" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A423 | 00000 | ||
| 2" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A426 | 00000 | ||
| 2 1/2" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A429 | 00000 | ||
| 3" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 5 | 90201A433 | 00000 | ||
| 3 1/2" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A437 | 0000 | ||
| 4" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A440 | 0000 | ||
| 4 1/2" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A443 | 0000 | ||
| 5" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A446 | 0000 | ||
| 6" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A449 | 0000 | ||
5/8"-11 | |||||||||||
| 1 1/2" | 15/16" | 15/32" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A525 | 0000 | ||
| 1 3/4" | 15/16" | 15/32" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A527 | 0000 | ||
| 2" | 15/16" | 15/32" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A531 | 0000 | ||
| 2 1/4" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A535 | 0000 | ||
| 2 1/2" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A536 | 0000 | ||
| 2 3/4" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A537 | 0000 | ||
| 3" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A539 | 0000 | ||
| 3 1/2" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A541 | 0000 | ||
| 4" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A544 | 0000 | ||
| 4 1/2" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A547 | 0000 | ||
| 5" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A550 | 0000 | ||
| 6" | 15/16" | 15/32" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A553 | 0000 | ||
3/4"-10 | |||||||||||
| 1 1/2" | 1 1/8" | 9/16" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A638 | 0000 | ||
| 2" | 1 1/8" | 9/16" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A640 | 0000 | ||
| 2 1/4" | 1 1/8" | 9/16" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A642 | 0000 | ||
| 2 1/2" | 1 1/8" | 9/16" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A644 | 0000 | ||
| 2 3/4" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A646 | 0000 | ||
| 3" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A648 | 0000 | ||
| 3 1/2" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A651 | 0000 | ||
| 4" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A654 | 00000 | ||
| 4 1/2" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A657 | 00000 | ||
| 5" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A660 | 00000 | ||
| 5 1/2" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A663 | 00000 | ||
| 6" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A667 | 00000 | ||
| 7" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A670 | 00000 | ||
| 8" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A674 | 00000 | ||
| 10" | 1 1/8" | 9/16" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A678 | 00000 | ||
1"-8 | |||||||||||
| 2" | 1 1/2" | 3/4" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A681 | 00000 | ||
| 3" | 1 1/2" | 3/4" | Fully Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A682 | 00000 | ||
| 4" | 1 1/2" | 3/4" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A683 | 00000 | ||
| 5" | 1 1/2" | 3/4" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A684 | 00000 | ||
| 6" | 1 1/2" | 3/4" | Partially Threaded | Coarse | SAE Grade 9 | 180,000 | 1 | 90201A685 | 00000 | ||
