Threading Threading |
|---|
 | Fully Threaded |
 | Partially Threaded |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
|---|
About Hex Head Screws and Bolts
More
Medium-Strength Grade 5 Steel Square Head Screws
Fully Threaded
Partially Threaded
Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Large flat sides make them easy to grip with a wrench and keep them from rotating in square holes. A zinc yellow-chromate plating provides corrosion resistance in wet environments. Grade 5 steel square head screws are marked with three radial lines. Material meets SAE J429 specifications for quality. Dimensions meet ASME B18.2.1 specifications. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Screws | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Nuts | |||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Each | Pkg. Qty. | Pkg. | ||
Zinc Yellow-Chromate Plated Grade 5 Steel | ||||||||||||
1/4"-20 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 11/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 100 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 11/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/8" | 11/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/8" | 11/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 0000 |
| 2" | Fully Threaded | __ | Coarse | 3/8" | 11/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 0000 |
| 3" | Fully Threaded | __ | Coarse | 3/8" | 11/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 0000 |
| 4" | Fully Threaded | __ | Coarse | 3/8" | 11/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 0000 |
5/16"-18 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 00000 |
| 2" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 00000 |
| 3" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 00000 |
| 4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 100 | 000000000 | 00000 |
3/8"-16 | ||||||||||||
| 1" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 50 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 50 | 000000000 | 00000 |
| 2" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 50 | 000000000 | 00000 |
| 2 1/2" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 50 | 000000000 | 00000 |
| 3" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 50 | 000000000 | 00000 |
| 4" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 50 | 000000000 | 00000 |
1/2"-13 | ||||||||||||
| 1" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 2" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 2 1/2" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 3" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 3 1/2" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 4" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 5" | Fully Threaded | __ | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 25 | 000000000 | 00000 |
| 6" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 21/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 25 | 000000000 | 00000 |
5/8"-11 | ||||||||||||
| 2" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 2 1/2" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 3" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 4" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 5" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 6" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 10 | 000000000 | 0000 |
3/4"-10 | ||||||||||||
| 2" | Fully Threaded | __ | Coarse | 1 1/8" | 1/2" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 3" | Fully Threaded | __ | Coarse | 1 1/8" | 1/2" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 4" | Fully Threaded | __ | Coarse | 1 1/8" | 1/2" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 5" | Fully Threaded | __ | Coarse | 1 1/8" | 1/2" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 6" | Fully Threaded | __ | Coarse | 1 1/8" | 1/2" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 10 | 000000000 | 00000 |
1"-8 | ||||||||||||
| 3" | Fully Threaded | __ | Coarse | 1 1/2" | 11/16" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4" | Fully Threaded | __ | Coarse | 1 1/2" | 11/16" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5" | Fully Threaded | __ | Coarse | 1 1/2" | 11/16" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6" | Fully Threaded | __ | Coarse | 1 1/2" | 11/16" | 120,000 | ASME B18.2.1, SAE J429 | 000000000 | 00000 | 1 | 000000000 | 0000 |