5/16"-18 Button Head Socket Cap Screws are bolts or machine screws with a Hex or Allen drive style.
Commonly referred to as allen bolts, button heads, or socket head screws
Clean and unstamped domed head with a flat bottom that protrudes above the installation surface
Cylindrical head and hexagonal drive style
Head diameter is nominally 1.5 times or more that of the screw shank (major) diameter
Chemically treated to add a mild extra layer of corrosion and abrasion resistance
Sleek black finished look
Black Oxide Stainless Steel Fasteners are commonly used in industries where the durability of Stainless Steel is required, but a smooth black look is desired. These industries include firearms, automotive (car and motorcycle), camping gear, archery, knife builds and product manufacturing.
