Used on spec item. 3a thread class right-hand 0.641" thread length hexagon head style 3.562" grip length 24 thread quantity per inch passivate surface treated unf thread series
Used on spec item. 3a thread class right-hand 0.787" thread length bevel-conical head style 0.055" hole diameter 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.475" thread length undercut pan no. 2 head style 0.037" hole diameter 28 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.250" thread length oval countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.023" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series