3a thread class right-hand 0.910" thread length pan head style 28 thread quantity per inch cadmium screw surface treated nthread is safety critical per mil-s-8879 under application category safety critical. apply one coat of mil-p-23377, ty 1, cl 1 or 3 unjf thread series
2a thread class right-hand 0.086" thread length flat countersunk undercut head style 40 thread quantity per inch navy special project passivate screw surface treated head has three slotted drives equally spaced 60.0 deg. apart. o-ring matl: kalrez o-ring, compound 4079 unc thread series
2a thread class right-hand 0.325" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated altered item make from MS24693-C4, this item includes an undercut located .065 in. from the top of the head, .170 in. lg, .080 in. dia unc thread series
2a thread class right-hand 0.309" thread length flat countersunk head style 28 thread quantity per inch passivate screw surface treated unf thread series
