2a thread class right-hand 0.530" thread length hexagon head style 16 thread quantity per inch thread relieved 0.270 dia by 0.060 lg thd end chamfered 0.060 lg BY45.0 degrees unc thread series
3a thread class right-hand 0.346" thread length round w/wrench flats head style 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.428" thread length hexagon head style 0.062" hole diameter 28 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.392" thread length fillister head style 32 thread quantity per inch head drilled 0.190 min. to 0.196 max. dia., 0.484 to 0.516 deep cadmium surface treated unf thread series
2a thread class right-hand 0.500" thread length hexagon head style 16 thread quantity per inch undercut 0.093 in. wide 0.593 in. from bearing surface of head cadmium surface treated unc thread series
Used on F-4. 3a thread class right-hand 0.484" thread length hexagon head style 16 thread quantity per inch cadmium threads surface treated unf thread series
3a thread class right-hand 0.450" thread length double hexagon extended washer head style 28 thread quantity per inch nickel surface treated unjf thread series
3a thread class right-hand 0.230" thread length double hexagon extended washer head style 28 thread quantity per inch nickel surface treated unjf thread series
3a thread class right-hand 0.562" thread length hexagon head style 24 thread quantity per inch navy special project passivate surface treated unf thread series
3a thread class right-hand 0.408" thread length double hexagon extended washer head style 28 thread quantity per inch chromium surface treated unjf thread series
3a thread class right-hand 0.800" thread length hexagon head style 20 thread quantity per inch navy special project cadmium surface treated unf thread series
