2a thread class right-hand 0.250" thread length flat chamfer head style 28 thread quantity per inch passivate screw surface treated 0.090 dia, cbore 0.136 dia to 0.032 remaining thk, 0.164-32 unc-2b x 0.223 min. deep unf thread series
3a thread class right-hand 0.338" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series
2a thread class right-hand 0.776" thread length flat countersunk head style 28 thread quantity per inch passivate or oxide screw surface treated unf thread series
Used on mrap-caiman. 2a thread class right-hand 0.658" thread length hexagon head style 32 thread quantity per inch passivate screw surface treated unf thread series
