3a thread class right-hand flush countersunk head style 0.865" grip length 28 thread quantity per inch 95000 single pounds per square inch shear strength unjf thread series
3a thread class right-hand 1.000" thread length flat chamfer head style 0.047" hole diameter 20 thread quantity per inch passivate surface treated unc thread series
3a thread class right-hand 0.530" thread length flat countersunk head style 1.562" grip length 24 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.402" thread length flat chamfer head style 56 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand 0.375" thread length flat chamfer head style 32 thread quantity per inch head w/additional drive slot at 90 deg passivate surface treated unf thread series
