The socket head cap screws are 100% Stainless Steel 18-8 (304) which offers a high level of chemical and corrosion resistance. Thread Diameter: 5/16 Inch; Thread Length: 1 Inch; Thread Count: 18 TPI, Course Thread. Head Diameter: 15/32 Inch; Head Height: 5/16 Inch; Drive Type: Allen Hex Socket 1/4 Inch; Color: Plain Finish. Package Included: 20 x Socket Head Cap Screws. Socket Head Cap Screws are great to have around for use in wood and wet environments. Product Specification
Socket caps have a small cylindrical head with tall vertical sides. Allen (hex socket) drive is a six-sided recess for use with an allen wrench (hex key).

Thread Diameter 5/16"
Head Diameter 15/32"
Head Height 5/16"
Screw Length 1"
Allen Hex Drive 1/4"
High Quality Material Stainless Steel 18-8

Package Included
20 x Socket Head Cap Bolts/Screws 5/16-18 x 1"

Warranty
MewuDecor hardware has the highest quality on the market. Buy with confidence. Money back or exchange guarranteed.