To maintain a reputation for zero defects , ensure optimum quality control, and produce fasteners of exceptionally high quality, ARP controls all aspects of the manufacturing process, performing all operations in-house where they can be closely monitored. This timing cover bolt kit is a good example of how ARP takes extraordinary steps to produce the very finest products of their kind on the market today. These bolts are manufactured from black oxide finished 8740 chrome moly steel, which is rated at 170,000 psi. They feature traditional hex style heads and come complete with high quality washers. Add ARP's legendary quality to your project Manufactured from 8740 chrome moly steel with a black oxide finish Rated at 170,000 PSI, which is considerably stronger than Grade 8 hardware Bolts feature conventional hex style heads Kit comes complete with high quality washers UPC 672036005276 ASIN B000CFO1HQ Brand ARP Color Black Model 200-1502 Set Name Yes Head Type Hex Size Name Stock Metal Type Alloy Steel Unit Count 1.0 Count Item Weight 0.08 Kilograms Part Number 2001502 Thread Size 0.65 inch Thread Type Unc Finish Types Black Oxide with Paint Grade Rating Grade 8 Manufacturer ARP Thread Class 1A Thread Style Right Hand, UNC, Full Fastener Size 0.65 inch Fastener Type Hexagon Bolt Item Diameter 0.5 Inches Item Hardness Grade 8 Material Type Alloy Steel Item Type Name ARP 2001502 Timing Cover Hex Bolt Kit Exterior Finish Painted Number Of Items 1 Thread Coverage Fully Threaded Screw Head Style Hex Screw Point Style Hex Manufacturer Grade Grade 8 Included Components ARP 2001502 Timing Cover Hex Bolt Kit Warranty Description Manufacturer Warranty Part Interchange Info 200-1502 Maximum Shear Strength 170,000 PSI or higher Compatible Groove Diameter 0.55 Inches Global Trade Identification Number 00672036005276