3a thread class right-hand 0.410" thread length hexagon head style 7 steps; 2 serrated sections, ONE0.500 inch diameter, one 0.375 diameter; optional center hole both ends unf thread series
2a thread class right-hand 1.000" thread length hexagon head style 14 thread quantity per inch tapped hole in.head 5/8-18 unf-2a by 1.062 in. lg zinc surface treated uns thread series
2a thread class right-hand 1.210" thread length flat chamfer head style 16 thread quantity per inch color black oxide surface treated unf thread series
2a thread class left-hand 1.000" thread length flat chamfer head style 16 thread quantity per inch head is recessed 0.562 in.dia by 0.040 in.deep unf thread series
2a thread class right-hand 1.125" thread length flat chamfer head style 14 thread quantity per inch head end drilled parrallel to axis 1.125 in. deep 1/12 in.-20 unf cl 2b thd 0.875 in. lg cadmium or zinc surface treated uns thread series
2a thread class right-hand 0.780" thread length 20 thread quantity per inch 3rd shoulder round, 0.618 in. min, 0.624 in. max dia by 1.320 in. lg cadmium or zinc surface treated unf thread series
