Bolts High Tensile Hexagonal Head 5/16 X 1.5 Long 18 Tpi Threads Up To 1 Length With One Hexagonal Head High Tensile Nut And 2 Plain Flat Washer Od-1 , Id-3/8 And Thickness 1/8 And Rectangular .Section Spring Washer Of Size Od 5/8 I/D-3/8 Thickness 1/16 .