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About Hex Head Screws and Bolts
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Medium-Strength Grade 5 Steel Hex Head Screws with Nuts and Washers
Fully Threaded
Partially Threaded
Twice as strong as low-strength steel screws, these Grade 5 screws are suitable for fastening most machinery and equipment. They come with matching nuts and washers so you can make a complete joint. All are zinc plated to prevent corrosion in wet environments. Washers distribute the pressure from a tightened nut over the surface of your material, which helps prevent damage. Screws and nuts meet SAE specifications for material quality and ASME specifications for dimensions. For quick identification, the screw heads are marked with three radial lines. Length is measured from under the head.
Screw | Nut | Washer | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Head Wd. | Head Ht. | Tensile Strength, psi | Wd. | Ht. | ID | OD | Thick. | No. of Screws Included | No. of Nuts Included | No. of Washers Included | Each | |
Zinc-Plated Grade 5 Steel | ||||||||||||||||
1/4"-20 | ||||||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 120,000 | 7/16" | 7/32" | 0.281" | 0.625" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 120,000 | 7/16" | 7/32" | 0.281" | 0.625" | 0.065" | 25 | 25 | 50 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 120,000 | 7/16" | 7/32" | 0.281" | 0.625" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 120,000 | 7/16" | 7/32" | 0.281" | 0.625" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 120,000 | 7/16" | 7/32" | 0.281" | 0.625" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 2" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 120,000 | 7/16" | 7/32" | 0.281" | 0.625" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
5/16"-18 | ||||||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | 1/2" | 17/64" | 0.343" | 0.687" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | 1/2" | 17/64" | 0.343" | 0.687" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | 1/2" | 17/64" | 0.343" | 0.687" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 120,000 | 1/2" | 17/64" | 0.343" | 0.687" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
3/8"-16 | ||||||||||||||||
| 1" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 120,000 | 9/16" | 21/64" | 0.406" | 0.812" | 0.065" | 10 | 10 | 20 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 120,000 | 9/16" | 21/64" | 0.406" | 0.812" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 120,000 | 9/16" | 21/64" | 0.406" | 0.812" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 120,000 | 9/16" | 21/64" | 0.406" | 0.812" | 0.065" | 25 | 25 | 50 | 000000000 | 00000 |
| 2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 120,000 | 9/16" | 21/64" | 0.406" | 0.812" | 0.065" | 10 | 10 | 20 | 000000000 | 0000 |
| 2 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 120,000 | 9/16" | 21/64" | 0.406" | 0.812" | 0.065" | 10 | 10 | 20 | 000000000 | 00000 |
| 3" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 120,000 | 9/16" | 21/64" | 0.406" | 0.812" | 0.065" | 10 | 10 | 20 | 000000000 | 00000 |
1/2"-13 | ||||||||||||||||
| 1" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 120,000 | 3/4" | 7/16" | 0.531" | 1.062" | 0.095" | 10 | 10 | 20 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 120,000 | 3/4" | 7/16" | 0.531" | 1.062" | 0.095" | 10 | 10 | 20 | 000000000 | 00000 |
| 2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 120,000 | 3/4" | 7/16" | 0.531" | 1.062" | 0.095" | 10 | 10 | 20 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 120,000 | 3/4" | 7/16" | 0.531" | 1.062" | 0.095" | 10 | 10 | 20 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 120,000 | 3/4" | 7/16" | 0.531" | 1.062" | 0.095" | 5 | 5 | 10 | 000000000 | 00000 |