3/8-16 Socket Head Cap Screws

3/8-16 Socket Head Cap Screws

3/8"-16 socket head cap screws in USS coarse (UNC) thread, made from heat treated alloy steel with a black oxide finish. We stock 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/4", 1-1/2", 1-3/4", 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/4", 3-1/2", 3-3/4", 4", 4-1/2", 5", 6" lengths. They take a 5/16" hex key. Shorter lengths are fully threaded (FT) and longer lengths partially threaded (PT).

Specifications

• Size: 3/8"-16 (USS coarse)
• Lengths: 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/4", 1-1/2", 1-3/4", 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/4", 3-1/2", 3-3/4", 4", 4-1/2", 5", 6"
• Hex key: 5/16"
• Tap drill: 5/16"
• Material: alloy steel, ASTM A574
• Finish: black oxide
• Strength: 180,000 psi minimum tensile strength (ASTM A574)

Common Uses

• Machinery and tooling
• Jigs and fixtures
• Counterbored holes

FAQ

What hex key fits a 3/8"-16 socket head cap screw?
A 5/16" hex key (Allen wrench).

What tap drill do I use for 3/8"-16?
Use a 5/16" drill for a standard 75% thread.

Will black oxide socket screws rust?
Black oxide is a thin conversion finish with a light oil. It gives mild rust protection indoors and a clean dark look, but it is not made for outdoor or wet use. For outdoor, wet or washdown areas, use our stainless steel socket screws.

Related: Stainless Socket Head Cap Screws | Hex Keys | All Socket Head Cap Screws USS Coarse

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