flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.188" grip length 32000 single pounds per square inch shear strength cadmium surface treated
2a thread class right-hand 0.195" thread length fillister head style 32 thread quantity per inch navy special project passivate surface treated unc thread series
2a thread class right-hand 0.875" thread length hexagon head style 1.813" grip length 18 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.531" thread length hexagon head style 1.562" grip length 24 thread quantity per inch zinc surface treated unf thread series
3a thread class right-hand 0.630" thread length flat countersunk head style 0.552" grip length 20 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.787" thread length bevel-conical head style 0.055" hole diameter 20 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.276" thread length flat countersunk head style 0.750" grip length 32 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 1.250" thread length hexagon head style 1.000" grip length 13 thread quantity per inch cadmium surface treated unc thread series