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About Hex Head Screws and Bolts
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Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.
Army-Navy Medium-Strength Steel Hex Head Screws
These 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. Comparable in strength to Grade 5 steel screws, these screws are suitable for fastening most machinery and equipment. The cadmium plating provides good corrosion resistance to salt water. Length is measured from under the head.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Lg. | Grip Lg. | Thread Spacing  | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | |||||||||||
1/2"-20 | |||||||||||
| 4 3/32" | Partially Threaded | 25/32" | 3 5/16" | Fine | 3/4" | 19/64" | 120,000 | AN8-40A | 1 | 94622A449 | 000000 |