Used on coast guard hh60j jayhawk helicopter. 3a thread class right-hand 0.275" thread length hexagon head style 1.900" grip length 24 thread quantity per inch the retaining device shall be released only by depressing the plunger located in the head of the bolt passivate surface treated unjf thread series
2a thread class right-hand 0.469" thread length flat countersunk head style 20 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.497" thread length flat chamfer head style 20 thread quantity per inch alter, make from MS16995-50, nsn 5305-00-988-7614 passivate surface treated unc thread series
3a thread class right-hand 0.719" thread length flat countersunk head style 24 thread quantity per inch cadmium screw surface treated unjf thread series