This listing is for 5/16"-18 Socket Head Cap Screws made from Heavy-Duty Alloy Steel with Black Oxide finish.

Available in 1/2" to 2-1/2" lengths

Note: PT = Partial Thread

Diameter : 5/16"

Thread Pitch : 18 TPI - UNC / Coarse Thread

Length : Please select from drop down menu above.

Drive : 1/4" Hex Key - Available here

Type : Socket Head Cap Screw

Matching Nut & Washers : 5/16"-18 Available here

System of Measurement : Standard (Inch / U.S.)

Material : Alloy Steel, Black Oxide

Specifications : ASTM A574