3a thread class right-hand 0.460" thread length double hexagon w/hole head style 1.552" grip length 28 thread quantity per inch navy special project cadmium surface treated unjf thread series
Used on coast guard hu25 jet atf3/6 engine. 3a thread class right-hand 0.770" thread length undercut hexagon head style 24 thread quantity per inch unjf thread series
2a thread class right-hand 0.350" thread length hexagon head style 20 thread quantity per inch navy special project cadmium surface treated unc thread series
3a thread class right-hand 0.7350" thread length dished hexagon head style 1.0520" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.6940" thread length dished hexagon head style 1.6780" grip length 20 thread quantity per inch cadmium surface treated unjf thread series