5/16-18 Hex Cap Screws / Tap Bolt, Zinc Yellow Grade 8 Alloy Steel Coarse Thread
Zinc-Yellow 5/16″-18 Hex Cap Bolts / Screws. These are Grade 8 (SAE J429), Heavy Duty bolts. Grade 8 bolts will always have 6 radial lines on the head (as shown in photo). Link to all of our matching Yellow Zinc fasteners NOTE : Full Thread / Tap Bolts up to 1-1/4″, Partial thread (PT) for lengths larger than 1-1/4″ Diameter: 5/16″Thread Pitch: 18 TPI – UNC / Coarse 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 / SAE J429 – HEAVY DUTY! Exterior Finish: Zinc-Yellow Bake, CR+6Specifications : ASME B18.2.1 / SAE J429