2a thread class right-hand 0.875" thread length hexagon head style 0.062" hole diameter 1.063" grip length 18 thread quantity per inch unf thread series
3a thread class right-hand 0.490" thread length 32 thread quantity per inch one hole 0.04 in. min, 0.05 in. max dia, drilled thru end opposite the point passivate surface treated unc thread series