3a thread class right-hand 0.530" thread length tee no. 6 head style 20 thread quantity per inch third diameter from head tapered from second diameter at 25 deg 30' unjf thread series
2a thread class right-hand 0.719" thread length pan head style 32 thread quantity per inch passivate screw surface treated paint top of head per 133C133, cagec 97942 unc thread series
2a thread class left-hand 4.540" thread length 11.300" overall length 20 thread quantity per inch supply with 0.250-28nf 2a thd on point 0.400 in. long primer surface treated unf thread series
3a thread class right-hand 0.276" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series