Used on 2320-01-304-2277 and 2320-01-304-2278 pls (palletized loading system). right-hand 20.0mm thread length hexagon head style cadmium surface treated m thread series
2a thread class right-hand 1.250" thread length hexagon countersunk head style 18 thread quantity per inch zinc or cadmium surface treated unf thread series
3a thread class right-hand 0.669" thread length double hexagon extended washer head style 1.315" grip length 28 thread quantity per inch unjf thread series
2a thread class right-hand 1.115" thread length dished hexagon head style 18 thread quantity per inch has lock washer dia 0.540/0.556 in, 0.125 in width, 0.078 in thickness, it has a zinc phosphate surface treatment phosphate zinc surface treated unc thread series
