5/16-18 X 6 HHCS GRADE 2
5/16-18 X 6 HHCS GR 5
5/16-18 X 6 HHCS GR 5 PLATED
5/16-18 X 6 HHCS GR 8 PLATED
5/16-24 X 6 HHCS GR 5 PLATED
5/16-18 X 6 HHCS 18-8 SS
5/16 -24 X 6 GR. 8 HEX HD. ZY