3a thread class right-hand 0.298" thread length dished hexagon head style 1.678" grip length 32 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.553" thread length dished hexagon head style 0.490" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
Used on aircraft, eagle f-15;aircraft, harrier av-8b. 3a thread class right-hand 0.381" thread length oval countersunk head style 0.865" grip length 32 thread quantity per inch aluminum surface treated unjf thread series
3a thread class right-hand 0.381" thread length oval countersunk head style 0.615" grip length 32 thread quantity per inch aluminum surface treated unjf thread series
2a thread class right-hand 0.663" thread length headless (setscrew) head style 20 thread quantity per inch chromium threads surface treated unc thread series