2a thread class right-hand 0.250" thread length fillister head style 80 thread quantity per inch passivate screw surface treated item has a slot in head 0.19 in. w, 0.23 in.depth unf thread series
Used on ma-4b rack assy. 3a thread class right-hand 0.250" thread length button head style 32 thread quantity per inch 0.283 in. max radius top head unf thread series
2a thread class right-hand 2.546" thread length flat countersunk head style 28 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.288" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.232" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unjc thread series
3a thread class right-hand 1.750" thread length pan head style 40 thread quantity per inch navy special project cadmium screw surface treated unjc thread series
3a thread class right-hand pan no. 2 head style 32 thread quantity per inch cadmium screw surface treated furnished with nylon washer, washer unf thread series