5/16-18, Finished Hex Nuts Grade 8 Z/P Yellow USA ,100 ea

GRADE 8 USS FINISHED HEX NUT For use with Grade 8 Fasteners Precision threads UNC & UNF Class 2B to ANSI/ASME B1.1 Zinc Plate yellow for corrosion resistance ASTM B633 Type II SC1. Size: 5/16-18 Thickness: 17/64 TECHNICAL DATA Hardness: 1/4-5/8 Nominal Diameter Rockwell C24-C32; 5/8-1 Nominal Diameter Rockwell C26-C34; 1 to 1-1/4 Nominal Diameter Rockwell C26-C36 Proof Load: 150000 psi Complies with SAE J995 Grade 8 ANSI/ASME B18.2.2 Hex Nuts Tempering Temperature: 800degree F. minimum Decarburation: SAE J121 Discontinuities: SAE J122A