5/16″-18 Hex Cap Screws / Tap Bolts Coarse SAE Grade 8 Alloy Steel w Black Oxide
New 5/16″-18 Hex Cap Bolts / Screws. These are Grade 8 bolts and meet the SAE material quality standards and are marked as shown. NOTE : Full Thread (FT) up to 1-1/4″, Partial thread (PT) for lengths 1-3/8″ and up. Diameter : 5/16″Thread Pitch : 18 TPI – Coarse (Standard) ThreadLength : Please select from drop down menu above.Wrench Size : 1/2″Type : Hex Cap ScrewsMatching Nut & Washers : 5/16″-18 Available hereSystem of Measurement : Standard (Inch / U.S.)Material : Grade 8 Alloy Steel – HEAVY DUTY!Specifications : ASTM F593 / SAE J429