2a thread class right-hand 0.290" 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
3a thread class right-hand 0.095" thread length flush head style 0.034" hole diameter 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.235" thread length pan no. 2 head style 0.060" hole diameter 32 thread quantity per inch passivate screw surface treated hole type drilled unjf thread series