Used on landing gear systems/components. 3a thread class right-hand 0.550" thread length undercut hexagon head style 0.046" hole diameter 32 thread quantity per inch critical application unf thread series
2a thread class right-hand 0.505" thread length hexagon head style 0.060" hole diameter 28 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.523" thread length hexagon head style 0.047" hole diameter 0.072" grip length 32 thread quantity per inch unjf thread series
3a thread class right-hand 0.602" thread length hexagon head style 3.110" grip length 24 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.423" thread length hexagon head style 0.070" hole diameter 28 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand 2.125" thread length hexagon head style 0.218" hole diameter 0.375" grip length 18 thread quantity per inch slot in head 0.062 inch wide, 0.062 inch deep cadmium surface treated unc thread series