5/8-18 UNF x 2-1/2 Allen Head Socket Bolt Black Oxide 160,000 PSI

5/8-18 UNF x 2-1/2 steel milspec Allen/Hex Head Socket Bolt. 18 thread count. Black Oxide Finish. 160,000 PSI Tensile Strength. NSN 5305-00-983-8082. Appearance many vary from the picture  Invoice is $13.04 each, 14578 C7D11