2a thread class right-hand 0.227" thread length flat countersunk head style 40 thread quantity per inch metallic-ceramic coating, 0.0003-0.0006 inch thick per mil-c-81751 unc thread series
2a thread class right-hand 0.773" thread length flat countersunk head style 16 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.148" thread length fillister head style 0.060" hole diameter 28 thread quantity per inch passivate screw surface treated hole type drilled unjf thread series
2a thread class right-hand 0.445" thread length flat countersunk head style 80 thread quantity per inch passivate screw surface treated unf thread series