3a thread class right-hand 0.750" thread length hexagon head style 28 thread quantity per inch nonmagnetic; modified hex head used on HU25a ATF3-6 model engine fan duct installation located at 225 degree fosition aft, bolt head forward unf thread series
3a thread class right-hand 2.121" thread length hexagon head style 0.070" hole diameter 16 thread quantity per inch cadmium surface treated unjf thread series
3a thread class 3.894" thread length double hexagon w/hole head style 0.050" hole diameter 12 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 1.260" thread length hexagon extended washer head style 20 thread quantity per inch phosphate surface treated unf thread series
Used on aircraft model av-8b. 3a thread class right-hand 2.300" thread length hexagon head style 0.250" grip length 20 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 1.061" thread length hexagon head style 6.172" grip length 16 thread quantity per inch cadmium surface treated unf thread series
Used on spec item. 3a thread class right-hand 0.749" thread length hexagon head style 0.070" hole diameter 1.422" grip length 20 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.381" thread length hexagon head style 2.490" grip length 32 thread quantity per inch weapon system essential cadmium fastener surface treated unf thread series
3a thread class right-hand 0.756" thread length hexagon head style 0.740" grip length 20 thread quantity per inch cadmium fastener surface treated unf thread series
3a thread class right-hand 0.553" thread length dished hexagon head style 3.115" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 1.721" thread length hexagon head style 0.070" hole diameter 24 thread quantity per inch passivate surface treated unjf thread series
