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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
 |
Partially Threaded |
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.
Medium-Strength Fastener—Your go-to screws for fastening most machinery and equipment. They have tensile strengths from 90,000 to 120,000 psi.
Steel—Unfinished steel screws are best for dry environments, since moisture will cause them to rust. They require little surface prep before applying a finish, so you can apply your own paint or coating.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Threading | Thread Spacing | Fastener Strength Grade/Class | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
Medium-Strength Steel | |||||||||||
1 3/4"-5 | |||||||||||
| 5" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A552 | 000000 | ||
| 6" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A554 | 00000 | ||
| 8" | 2 5/8" | 1 3/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A576 | 00000 | ||
2"-4 1/2 | |||||||||||
| 5" | 3" | 1 7/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A652 | 00000 | ||
| 7" | 3" | 1 7/32" | Partially Threaded | Coarse | SAE Grade 5 | 90,000 | 1 | 91283A668 | 00000 | ||
