3a thread class right-hand flush countersunk head style 1.4325" grip length 24 thread quantity per inch 125000 single pounds per square inch shear strength passivate surface treated unjf thread series
3a thread class right-hand 0.245" grip length 32 thread quantity per inch 125000 single pounds per square inch shear strength light blue indentification on top of head passivate surface treated unjf thread series
2a thread class right-hand 0.217" thread length pan head style 32 thread quantity per inch oxide secondary washeroxide primary washerpassivate springoxide stand-offoxide fastener surface treated unf thread series
