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Steel Wire-Lockable Hex Head Screws
Fully Threaded
Partially Threaded
These Grade 5 steel screws are over 70% stronger than our stainless steel wire-lockable hex head screws. Wire these screws together through the hole in the head to get more vibration resistance than any other screw (wire sold separately). Material meets SAE J429 specifications for quality. 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-oxide steel screws are mildly corrosion resistant in dry environments.
Zinc-plated steel screws resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Screws | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Stainless Steel Wire | ||||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Wd. | Ht. | Hole Dia. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Each | ||
Black-Oxide Grade 5 Steel | |||||||||||||
1/4"-20 | |||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 5/8" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/4" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
5/16"-18 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
3/8"-16 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
1/2"-13 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 3/4" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
5/8"-11 | |||||||||||||
| 1 1/2" | Fully Threaded | __ | Coarse | 15/16" | 25/64" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 25/64" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
3/4"-10 | |||||||||||||
| 2" | Fully Threaded | __ | Coarse | 1 1/8" | 15/32" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 000000 | 00 |
| 2 1/4" | Fully Threaded | __ | Coarse | 1 1/8" | 15/32" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 000000 | 00 |
Zinc-Plated Grade 5 Steel | |||||||||||||
1/4"-20 | |||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 7/16" | 11/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 7/16" | 11/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 7/16" | 11/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 7/16" | 11/64" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 | 0000000 | 0000 |
5/16"-18 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 1/2" | 7/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 7/8" | Fully Threaded | __ | Coarse | 1/2" | 7/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 1/2" | 7/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 7/8" | Coarse | 1/2" | 7/32" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
3/8"-16 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2 1/2" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 1/4" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 3" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 0.063" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
1/2"-13 | |||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 3/4" | 11/32" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/4" | 11/32" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 11/32" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 11/32" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 3/4" | Fully Threaded | __ | Coarse | 3/4" | 11/32" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 4 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 0.109" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 00000 | 0000000 | 0000 |
5/8"-11 | |||||||||||||
| 1 1/2" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
| 1 3/4" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
| 2" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
3/4"-10 | |||||||||||||
| 2" | Fully Threaded | __ | Coarse | 1 1/8" | 1/2" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
| 2 1/4" | Fully Threaded | __ | Coarse | 1 1/8" | 1/2" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
| 3" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 1/2" | 0.156" | 120,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 | 0000000 | 00000 |
Stainless Steel Wire-Lockable Hex Head Screws
Fully Threaded
Partially Threaded
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Wire these screws together through the hole in the head to get more vibration resistance than any other screw (wire sold separately). 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 | Stainless Steel Wire | |||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Wd. | Ht. | Hole Dia. | Tensile Strength, psi | Specifications Met | Each | Each | ||
18-8 Stainless Steel | ||||||||||||
1/4"-20 | ||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 00000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
5/16"-18 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
3/8"-16 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.063" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
1/2"-13 | ||||||||||||
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.109" | 70,000 | ASME B18.2.1 | 000000000 | 0000 | 0000000 | 0000 |
Stainless Steel Wire-Lockable Socket Head Screws
Fully Threaded
Partially Threaded
Screws are 18-8 stainless steel for good chemical resistance. They may be mildly magnetic. For more vibration resistance than any other socket head screw, wire these screws together through the hole in the head (wire sold separately). All screws meet ASME B18.3 and ASTM F837 for dimensional standards and material quality. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Screws | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Stainless Steel Wire | |||||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Hole Dia. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel | ||||||||||||||
2-56 | ||||||||||||||
| 1/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 000000 | 0000000 | 000000 |
| 3/16" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
4-40 | ||||||||||||||
| 1/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.036" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/16" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.036" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/16" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.036" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
6-32 | ||||||||||||||
| 3/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
8-32 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.047" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.035" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.035" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.035" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.047" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
10-24 | ||||||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
10-32 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/4" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/2" | Partially Threaded | 1 1/8" | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
1/4"-20 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/16" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
5/16"-18 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
3/8"-16 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 3/4" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1 1/2" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
1/2"-13 | ||||||||||||||
| 1" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
Alloy Steel Wire-Lockable Socket Head Screws
Fully Threaded
Partially Threaded
Screws are alloy steel with a tensile strength of 170,000 psi, making them stronger than Grade 8 steel screws and more than twice as strong as stainless steel wire-lockable screws. Their black-oxide finish provides mild corrosion resistance in dry environments. For more vibration resistance than any other socket head screw, wire these screws together through the hole in the head (wire sold separately). Dimensions meet ASME B18.3 specifications. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Screws | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Stainless Steel Wire | |||||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Hole Dia. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Each | ||
Black-Oxide Alloy Steel | ||||||||||||||
2-56 | ||||||||||||||
| 3/16" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 170,000 | ASME B18.3 | 5 | 000000000 | 000000 | 0000000 | 000000 |
| 1/4" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 00000 |
4-40 | ||||||||||||||
| 3/16" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
6-32 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
8-32 | ||||||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.047" | 9/64" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.047" | 9/64" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.047" | 9/64" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
10-24 | ||||||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
10-32 | ||||||||||||||
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
1/4"-20 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 5/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1 3/4" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 2 1/4" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 2 1/2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 2 3/4" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 3" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 3 1/2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
1/4"-28 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 0.047" | 3/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 0000 | 0000000 | 00000 |
5/16"-18 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
5/16"-24 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Fine | 15/32" | 5/16" | 0.047" | 1/4" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Fine | 15/32" | 5/16" | 0.047" | 1/4" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 00000 |
3/8"-16 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 1 3/4" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 2 1/4" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 2 1/2" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 3 1/2" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 5 | 000000000 | 0000 | 0000000 | 0000 |
3/8"-24 | ||||||||||||||
| 1" | Fully Threaded | __ | Fine | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Fine | 9/16" | 3/8" | 0.064" | 5/16" | 170,000 | ASME B18.3 | 10 | 000000000 | 00000 | 0000000 | 0000 |
5/8"-11 | ||||||||||||||
| 2" | Fully Threaded | __ | Coarse | 15/16" | 5/8" | 0.064" | 1/2" | 170,000 | ASME B18.3 | 1 | 000000000 | 0000 | 0000000 | 0000 |
| 2 1/2" | Partially Threaded | 1 3/4" | Coarse | 15/16" | 5/8" | 0.064" | 1/2" | 170,000 | ASME B18.3 | 1 | 000000000 | 0000 | 0000000 | 0000 |
1/2"-13 | ||||||||||||||
| 1" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 3/4" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2 1/2" | Partially Threaded | 1 1/2" | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
1/2"-20 | ||||||||||||||
| 1 1/4" | Fully Threaded | __ | Fine | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 3/4" | Fully Threaded | __ | Fine | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2" | Fully Threaded | __ | Fine | 3/4" | 1/2" | 0.064" | 3/8" | 170,000 | ASME B18.3 | 5 | 000000000 | 00000 | 0000000 | 0000 |