Used on mrap - common nsn - 3 mrap variants and 1 other weapon system. right-hand 37.60mm thread length surface treatment yellow or olive drab green. zinc surface treated m thread series
2a thread class right-hand 1.060" thread length hexagon head style 18 thread quantity per inch drilled hole on flat portion of head 0.064 - .070 in dia cadmium surface treated unc thread series
2a thread class right-hand 1.037" thread length hexagon head style 24 thread quantity per inch navy special project passivate surface treated unf thread series
3a thread class right-hand 0.659" thread length spline extended washer head style 0.060" hole diameter 24 thread quantity per inch 220000 ksi fut at 800 deg fahreheit passivate or cadmium surface treated unjf thread series
3a thread class right-hand 0.602" thread length spline drive shear head head style 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.645" thread length double hexagon extended washer head style 24 thread quantity per inch 32 degree microinches finish on unthreaded shank unjf thread series
3a thread class right-hand 0.672" thread length square head style 0.198" hole diameter 20 thread quantity per inch item has 2 shank holes, undercut .093 inch between first shoulder cadmium surface treated unf thread series
