2a thread class right-hand 0.281" thread length flat chamfer head style 32 thread quantity per inch head vertically knurled passivate fastener surface treated unc thread series
3a thread class right-hand 0.375" thread length knurled no. 4 head style 20 thread quantity per inch straight knurl passivate surface treated unc thread series
2a thread class right-hand 2.500" thread length tee no. 5 head style 24 thread quantity per inch head dia chamfered 0.125 in. by 45 deg cadmium surface treated unf thread series
3a thread class right-hand 0.351" thread length flat countersunk head style 24 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.276" thread length flat countersunk head style 1.125" grip length 32 thread quantity per inch cadmium surface treated unjc thread series
3a thread class right-hand 1.417" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.500" thread length flat chamfer head style 56 thread quantity per inch chromate zinc screw surface treated unc thread series