System of Measurement System of Measurement |
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Length Length |
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Specifications Met Specifications Met |
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Grip Length Grip Length |
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Head Type Head Type |
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Threading Threading |
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 | Partially Threaded |
Material Material |
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Locking Type Locking Type |
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 | Cotter Pin |
Finish Finish |
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Thread Spacing Thread Spacing |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Tensile Strength Tensile Strength |
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Drive Style Drive Style |
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Hardness Hardness |
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Thread Fit Thread Fit |
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Thread Type Thread Type |
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About Hex Head Screws and Bolts
More
Cotter Pin-Lockable Hex Head Screws
Place a cotter pin through the hole in the shank to keep a nut from loosening (pins and nuts sold separately). These screws have a stronger hold than screws with thread lockers or lock washers. Screws are made to stringent Army-Navy specifications that ensure performance and reliability. They have a precisely measured unthreaded portion (grip). For added strength, place this portion in joints subjected to sideways forces. The cadmium plating provides good corrosion resistance to salt water. Screws have fine threads, which are closely spaced to prevent loosening from vibration; they are not compatible with coarse or extra-fine threads. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||||
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| Lg. | Threading | Thread Spacing | Thread Lg. | Grip Lg. | Wd. | Ht. | Hole Dia. | For Cotter Pin Dia. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | |||||||||||||
1/4"-28 | |||||||||||||
| 17/32" | Partially Threaded | Fine | 15/32" | 1/16" | 7/16" | 11/64" | 0.076" | 1/16" | 120,000 | AN4-4 | 10 | 000000000 | 000000 |
| 21/32" | Partially Threaded | Fine | 15/32" | 3/16" | 7/16" | 11/64" | 0.076" | 1/16" | 120,000 | AN4-5 | 10 | 000000000 | 00000 |
| 25/32" | Partially Threaded | Fine | 15/32" | 5/16" | 7/16" | 11/64" | 0.076" | 1/16" | 120,000 | AN4-6 | 10 | 000000000 | 00000 |
| 1 1/32" | Partially Threaded | Fine | 15/32" | 9/16" | 7/16" | 11/64" | 0.076" | 1/16" | 120,000 | AN4-10 | 10 | 000000000 | 00000 |
| 1 9/32" | Partially Threaded | Fine | 15/32" | 13/16" | 7/16" | 11/64" | 0.076" | 1/16" | 120,000 | AN4-12 | 10 | 000000000 | 00000 |
| 1 17/32" | Partially Threaded | Fine | 15/32" | 1 1/16" | 7/16" | 11/64" | 0.076" | 1/16" | 120,000 | AN4-14 | 10 | 000000000 | 00000 |
| 2 1/32" | Partially Threaded | Fine | 15/32" | 1 9/16" | 7/16" | 11/64" | 0.076" | 1/16" | 120,000 | AN4-20 | 10 | 000000000 | 00000 |
5/16"-24 | |||||||||||||
| 27/32" | Partially Threaded | Fine | 17/32" | 5/16" | 1/2" | 13/64" | 0.076" | 1/16" | 120,000 | AN5-6 | 5 | 000000000 | 0000 |
| 1 3/32" | Partially Threaded | Fine | 17/32" | 9/16" | 1/2" | 13/64" | 0.076" | 1/16" | 120,000 | AN5-10 | 5 | 000000000 | 00000 |
| 1 11/32" | Partially Threaded | Fine | 17/32" | 13/16" | 1/2" | 13/64" | 0.076" | 1/16" | 120,000 | AN5-12 | 5 | 000000000 | 00000 |
| 1 19/32" | Partially Threaded | Fine | 17/32" | 1 1/16" | 1/2" | 13/64" | 0.076" | 1/16" | 120,000 | AN5-14 | 5 | 000000000 | 00000 |
| 2 3/32" | Partially Threaded | Fine | 17/32" | 1 9/16" | 1/2" | 13/64" | 0.076" | 1/16" | 120,000 | AN5-20 | 5 | 000000000 | 0000 |
3/8"-24 | |||||||||||||
| 53/64" | Partially Threaded | Fine | 41/64" | 3/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-6 | 5 | 000000000 | 00000 |
| 1 5/64" | Partially Threaded | Fine | 41/64" | 7/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-10 | 5 | 000000000 | 00000 |
| 1 21/64" | Partially Threaded | Fine | 41/64" | 11/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-12 | 5 | 000000000 | 00000 |
| 1 37/64" | Partially Threaded | Fine | 41/64" | 15/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-14 | 5 | 000000000 | 00000 |
| 1 53/64" | Partially Threaded | Fine | 41/64" | 1 3/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-16 | 5 | 000000000 | 00000 |
| 2 5/64" | Partially Threaded | Fine | 41/64" | 1 7/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-20 | 5 | 000000000 | 00000 |
| 2 37/64" | Partially Threaded | Fine | 41/64" | 1 15/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-24 | 5 | 000000000 | 00000 |
| 3 5/64" | Partially Threaded | Fine | 41/64" | 2 7/16" | 9/16" | 15/64" | 0.106" | 3/32" | 120,000 | AN6-30 | 5 | 000000000 | 00000 |
1/2"-20 | |||||||||||||
| 1 3/32" | Partially Threaded | Fine | 25/32" | 5/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-10 | 1 | 000000000 | 00000 |
| 1 11/32" | Partially Threaded | Fine | 25/32" | 9/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-12 | 1 | 000000000 | 00000 |
| 1 19/32" | Partially Threaded | Fine | 25/32" | 13/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-14 | 1 | 000000000 | 0000 |
| 1 27/32" | Partially Threaded | Fine | 25/32" | 1 1/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-16 | 1 | 000000000 | 0000 |
| 2 3/32" | Partially Threaded | Fine | 25/32" | 1 5/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-20 | 1 | 000000000 | 0000 |
| 2 19/32" | Partially Threaded | Fine | 25/32" | 1 13/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-24 | 1 | 000000000 | 0000 |
| 3 3/32" | Partially Threaded | Fine | 25/32" | 2 5/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-30 | 1 | 000000000 | 0000 |
| 3 19/32" | Partially Threaded | Fine | 25/32" | 2 13/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-34 | 1 | 000000000 | 00000 |
| 4 3/32" | Partially Threaded | Fine | 25/32" | 3 5/16" | 3/4" | 19/64" | 0.106" | 3/32" | 120,000 | AN8-40 | 1 | 000000000 | 00000 |