Used on mrap navistar dxm ambulance. 2a thread class right-hand 7.5" thread length hexagon head style bolt, hex hd 3/8-16 x 7-1/2 zinc surface treated unc thread series
3a thread class right-hand 0.499" thread length hexagon head style 0.125" grip length 24 thread quantity per inch cadmium surface treated unc thread series