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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Hex Head Screws and Bolts
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Medium-Strength Grade 5 Steel Hex Head Screws
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.
Black ultra-corrosion-resistant-coated steel screws resist chemicals and withstand 1,000 hours of salt spray per ASTM B117. To maintain corrosion resistance, use these screws with black ultra-corrosion-resistant-coated nuts and washers.
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 | Thread Spacing  | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black Ultra-Corrosion-Resistant-Coated Grade 5 Steel | |||||||||
1/4"-20 | |||||||||
| 1/2" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 00000 |
| 5/8" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1 3/4" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 2" | Fully Threaded | Coarse | 7/16" | 5/32" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
5/16"-18 | |||||||||
| 1/2" | Fully Threaded | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1 3/4" | Fully Threaded | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 2" | Fully Threaded | Coarse | 1/2" | 13/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
3/8"-16 | |||||||||
| 3/4" | Fully Threaded | Coarse | 9/16" | 15/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 9/16" | 15/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 9/16" | 15/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 9/16" | 15/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 00000 |
| 1 3/4" | Fully Threaded | Coarse | 9/16" | 15/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 00000 |
| 2" | Fully Threaded | Coarse | 9/16" | 15/64" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 5 | 000000000 | 00000 |
1/2"-13 | |||||||||
| 1" | Fully Threaded | Coarse | 3/4" | 5/16" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 1 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 3/4" | 5/16" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 1 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 3/4" | 5/16" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 1 | 000000000 | 0000 |
| 1 3/4" | Fully Threaded | Coarse | 3/4" | 5/16" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 1 | 000000000 | 0000 |
| 2" | Fully Threaded | Coarse | 3/4" | 5/16" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 1 | 000000000 | 0000 |
| 2 1/4" | Fully Threaded | Coarse | 3/4" | 5/16" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 1 | 000000000 | 0000 |
| 2 1/2" | Fully Threaded | Coarse | 3/4" | 5/16" | 120,000 | ASME B18.2.1, ASTM B117, SAE J429 | 1 | 000000000 | 0000 |
Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws
Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Serrations under the head grip the material surface for mild vibration resistance, and the flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. Material meets SAE J429 specifications for quality. Dimensions meet IFI 111 specifications. Grade 5 steel hex head screws are marked with three radial lines. Head height includes the flange. Length is measured from under the flange.
Black ultra-corrosion-resistant-coated steel screws resist chemicals and withstand 1,000 hours of salt spray. To maintain corrosion resistance, use these screws with black ultra-corrosion-resistant-coated nuts and washers.
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.
For technical drawings and 3-D models, click on a part number.
Screws | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Grade 5 Steel Nuts | ||||||||||||
| Lg. | Threading | Thread Spacing | Wd. | Ht. | Flange Dia. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | ||
1/4"-20 | |||||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 9/32" | 9/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 9/32" | 9/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 3/8" | 9/32" | 9/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 3/8" | 9/32" | 9/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 10 | 000000000 | 0000 |
5/16"-18 | |||||||||||||
| 1/2" | Fully Threaded | Coarse | 1/2" | 21/64" | 11/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 1/2" | 21/64" | 11/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 1/2" | 21/64" | 11/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 1/2" | 21/64" | 11/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 10 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 1/2" | 21/64" | 11/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 00000 | 10 | 000000000 | 0000 |
3/8"-16 | |||||||||||||
| 3/4" | Fully Threaded | Coarse | 9/16" | 25/64" | 13/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 5 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 9/16" | 25/64" | 13/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 0000 | 5 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 9/16" | 25/64" | 13/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 00000 | 5 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 9/16" | 25/64" | 13/16" | 120,000 | IFI 111, SAE J429 | 5 | 000000000 | 00000 | 5 | 000000000 | 0000 |
| 2" | Fully Threaded | Coarse | 9/16" | 25/64" | 13/16" | 120,000 | IFI 111, SAE J429 | 1 | 000000000 | 0000 | 5 | 000000000 | 0000 |
1/2"-13 | |||||||||||||
| 1" | Fully Threaded | Coarse | 3/4" | 33/64" | 1 5/64" | 120,000 | IFI 111, SAE J429 | 1 | 000000000 | 0000 | 5 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 3/4" | 33/64" | 1 5/64" | 120,000 | IFI 111, SAE J429 | 1 | 000000000 | 0000 | 5 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 3/4" | 33/64" | 1 5/64" | 120,000 | IFI 111, SAE J429 | 1 | 000000000 | 0000 | 5 | 000000000 | 0000 |