3a thread class right-hand 0.250" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.348" thread length flat countersunk head style 1.125" grip length 32 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand 0.288" thread length hexagon head style 32 thread quantity per inch zinc screw surface treated protective finish: finish 1.9.2.3 of mil-std-171, except .0003 thick. supplementary chromate treatment to be bronze or olive drab in color unc thread series
Used on helicopter, mcdonnell douglas corp, apache attack model ah-64a. 3a thread class right-hand 0.276" thread length pan head style 32 thread quantity per inch unf thread series
Used on helicopter, mcdonnell douglas corp, apache attack model ah-64a. 2a thread class right-hand 0.276" thread length pan head style 32 thread quantity per inch unc thread series
