5/8-11 X 8 1/2 HHCS GR 5
5/8-18 X 8-1/2 GR.5 HHCS PLAIN FINISH
5/8-11 X 8 1/2 HHCS GR 5 PLATED
5/8-11 X 8-1/2 HHCS GR.8
5/8-11 X 8 1/2 HEX HD GR8 ZINC /YELL