3a thread class right-hand 0.908" thread length round extended washer head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.147" thread length flat countersunk head style 56 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.530" thread length knurled no. 1 head style 28 thread quantity per inch head undercut 0.060 in. deep by 0.550 in. min 0.600 in. max dia unf thread series
Used on aircraft, thunderbolt ii, a-10. 3a thread class right-hand flush countersunk head style 1.630" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.408" thread length round extended washer head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.407" thread length flat countersunk head style 20 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 1.240" thread length hexagon head style 2.190" grip length 20 thread quantity per inch nickel surface treated unjf thread series
Used on ammo maint/renovation. 2a thread class right-hand 0.625" thread length hexagon extended washer head style 32 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 1.250" thread length flat countersunk head style 32 thread quantity per inch oxide film screw surface treated unc thread series
