2a thread class right-hand 0.500" thread length hexagon head style 0.062" hole diameter 18 thread quantity per inch phosphate surface treated unc thread series
3a thread class right-hand 1.250" thread length flat chamfer head style 0.061" hole diameter 16 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.347" thread length flat countersunk undercut head style 32 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.484" thread length hexagon head style 1.375" grip length 18 thread quantity per inch cadmium head surface treated unf thread series
3a thread class right-hand 0.399" thread length flat chamfer head style 28 thread quantity per inch passivate fastener surface treated unrf thread series
Used on w/s:helicopter, black hawk uh-60a; helicopter, lamps mark iii, sh-60b; helicopter, seahawk, h-60; helicopter, electronic countermeasures, eh-60a; helicopter, uh-60a/uh-60d. cadmium surface treated
Used on rg-33 auv mrap. 2a thread class right-hand 0.875" thread length hexagon head style 18 thread quantity per inch zinc surface treated unc thread series
Used on mrap buffalo mk2a2. 2a thread class right-hand 0.875" thread length hexagon head style 18 thread quantity per inch zinc surface treated unc thread series
