3a thread class right-hand 0.813" thread length hexagon head style 0.062" hole diameter 1.907" grip length 13 thread quantity per inch unc thread series
3a thread class right-hand 0.625" thread length hexagon head style 0.062" hole diameter 0.094" grip length 18 thread quantity per inch unc thread series
2a thread class right-hand 0.938" thread length hexagon head style 0.062" hole diameter 20 thread quantity per inch no. 7 hole in head must be drilled across hex points unc thread series