3a thread class right-hand 0.802" grip length 24 thread quantity per inch 95000 single pounds per square inch shear strength passivate surface treated unjf thread series
2a thread class right-hand 0.262" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
Used on lantirn. 3a thread class right-hand 0.444" thread length flat countersunk head style 1.428" grip length 24 thread quantity per inch passivate surface treated unjf thread series