2a thread class right-hand 1.125" thread length hexagon head style 20 thread quantity per inch screw, cap, hex head zinc surface treated unf thread series
3a thread class right-hand 1.335" thread length flat chamfer head style 16 thread quantity per inch knurled head optional ceramic surface treated unc thread series
3a thread class right-hand 1.110" thread length flat chamfer head style 20 thread quantity per inch knurled head optional ceramic surface treated unc thread series
3a thread class right-hand 1.085" thread length flat chamfer head style 16 thread quantity per inch knurled head optional ceramic surface treated unc thread series
2a thread class right-hand 0.594" thread length hexagon head style 20 thread quantity per inch weapon system essential passivate fastener surface treated unc thread series