3a thread class right-hand 1.531" thread length hexagon head style 0.062" hole diameter 0.406" grip length 28 thread quantity per inch unf thread series
3a thread class right-hand 1.000" thread length flat chamfer head style 0.044" hole diameter 28 thread quantity per inch passivate surface treated unrf thread series
3a thread class right-hand 0.251" thread length flat countersunk head style 0.802" grip length 32 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.371" thread length flat countersunk head style 1.052" grip length 28 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 0.371" thread length flat countersunk head style 1.052" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.540" thread length round w/wrench flats chamfered head style 20 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.570" thread length round w/wrench flats chamfered head style 20 thread quantity per inch outer edge of one wrench flat chamfered 45 deg to a depth of 0.100 in. min, 0.120 in. max cadmium surface treated unf thread series
2a thread class right-hand 3.250" thread length 16 thread quantity per inch enamel or cadmium or zinc surface treated off-set round bend unf thread series
2a thread class right-hand 0.188" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unf thread series
