3b thread class right-hand flat countersunk undercut head style 28 thread quantity per inch color identification black top surface of head, furnished with o ring cadmium surface treated
2b thread class right-hand hexagon head style 32 thread quantity per inch hole 0.063 in. porm 0.001 in. dia, located 0.250 in. from shank end; 63microinch aa finish on shank cadmium surface treated
Used on w/s:airborne mobile dir air spt ctl (2id),(o2mjul83)(an/uyq-3a). 3b thread class right-hand flat head style 20 thread quantity per inch passivate surface treated
