5/8-18 Socket Head Cap Screws

5/8-18 Socket Head Cap Screws | The Nutty Company, Inc.

5/8-18 Socket Head Cap Screws

5/8"-18 socket head cap screws in SAE fine (UNF) thread, made from heat treated alloy steel with a black oxide finish. We stock 1-1/4", 1-1/2", 1-3/4", 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/2", 4", 4-1/2", 5", 6", 7" lengths. They take a 1/2" hex key. Shorter lengths are fully threaded (FT) and longer lengths partially threaded (PT).

Specifications

Size: 5/8"-18 (SAE fine)
Lengths: 1-1/4", 1-1/2", 1-3/4", 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/2", 4", 4-1/2", 5", 6", 7"
Hex key: 1/2"
Tap drill: 37/64"
Material: alloy steel, ASTM A574
Finish: black oxide
Strength: 170,000 psi minimum tensile strength (ASTM A574)

Common Uses

Machinery and tooling
Jigs and fixtures
Counterbored holes

FAQ

What hex key fits a 5/8"-18 socket head cap screw?
A 1/2" hex key (Allen wrench).

What tap drill do I use for 5/8"-18?
Use a 37/64" 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.

Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.