2a thread class right-hand 3.5" thread length hexagon head style 13 thread quantity per inch oem is fontana fasteners p/n PUFT81213312y unc thread series
2a thread class right-hand 1.25" thread length chamfer flange head style 13 thread quantity per inch oem is national threaded fasteners p/N50C350BFL8p unc thread series
Used on 2355-01-539-3601. 2a thread class 1.0" thread length hexagon head style 16.0 thread quantity per inch hex head capscrew zinc surface treated unc thread series
Used on 2320-01-465-2174. 2a thread class right-hand 0.625" thread length hexagon head style 24 thread quantity per inch screw, cap, hex (finished hex bolt) passivate surface treated unf thread series
