3/4-10 X 4-1/4 GR.8 HEX C/S
1 1/8-7 X 4 1/4 HHCS GR 8
1 1/2-6 X 4 1/4 HEX HD GR8
3/4-16 X 4-1/4 GR.8 HEX C/S
5/8-11 X 4 1/4 GR 8 HHCS
5/16-18 X 4 1/4 HX HD GR8
3/8-16 X 4 1/4 HEX HD GR8 C/S Z/Y
1/2-13 X 4 1/4 HEX HD GR8