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About Hex Head Screws and Bolts
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Medium-Strength Grade 5 Steel Hex Head Screws
Partially Threaded
Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Dimensions meet ASME B18.2.1 specifications. Grade 5 steel hex head screws are marked with three radial lines. Length is measured from under the head.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Screws that meet ASTM A449 or SAE J429 comply with specifications and testing requirements for material quality.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Grade 5 Steel | ||||||||||
1 3/4"-5 | ||||||||||
| 5" | Partially Threaded | 4 1/2" | Coarse | 2 5/8" | 1 3/32" | 90,000 | ASME B18.2.1, ASTM A449 | 1 | 000000000 | 000000 |
| 6" | Partially Threaded | 3 3/4" | Coarse | 2 5/8" | 1 3/32" | 90,000 | ASME B18.2.1, ASTM A449 | 1 | 000000000 | 00000 |
| 8" | Partially Threaded | 4" | Coarse | 2 5/8" | 1 3/32" | 90,000 | ASME B18.2.1, ASTM A449 | 1 | 000000000 | 00000 |
2"-4 1/2 | ||||||||||
| 5" | Partially Threaded | 4 7/16" | Coarse | 3" | 1 7/32" | 90,000 | ASME B18.2.1, ASTM A449 | 1 | 000000000 | 00000 |
| 7" | Partially Threaded | 4 1/2" | Coarse | 3" | 1 7/32" | 90,000 | ASME B18.2.1, ASTM A449 | 1 | 000000000 | 00000 |