2a thread class right-hand 0.108" thread length flat countersunk head style 80 thread quantity per inch navy special project cadmium screw surface treated unf thread series
3a thread class right-hand 0.403" thread length flat countersunk head style 0.928" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 1.120" grip length 24 thread quantity per inch 125000 single pounds per square inch shear strength light blue identification on top of head passivate surface treated unjf thread series
Used on aircraft,b-2 bomber (atb);sot equipment (se),b-2 bomber. 3a thread class right-hand 0.403" thread length flat countersunk head style 0.740" grip length 28 thread quantity per inch unjf thread series
3a thread class right-hand 1.152" thread length double hexagon w/hole head style 0.065" hole diameter 2.490" grip length 18 thread quantity per inch navy special project cadmium surface treated unjf thread series
2a thread class right-hand 0.235" thread length pan head style 32 thread quantity per inch oxide secondary washeroxide primary washerpassivate springoxide stand-offoxide fastener surface treated unf thread series
