Used on propeller blade aboard 210 ft "a" class coast guard vessels. 2a thread class right-hand 2.187" thread length hexagon extended washer head style 8 thread quantity per inch un thread series
2a thread class right-hand 0.600" thread length double hexagon extended washer head style 0.094" hole diameter 18 thread quantity per inch unc thread series
2a thread class right-hand 1.000" thread length hexagon head style 24 thread quantity per inch locking feature material plastic polymide zinc fastener surface treated unf thread series
3a thread class right-hand 0.641" thread length hexagon head style 0.070" hole diameter 0.047" grip length 20 thread quantity per inch anodize or chromate surface treated unf thread series
2a thread class right-hand 2.250" thread length hexagon head style 8 thread quantity per inch locking feature material epoxy plastic zinc fastener surface treated unc thread series
2a thread class right-hand 2.000" thread length hexagon head style 0.123" hole diameter 9 thread quantity per inch zinc surface treated unc thread series
2a thread class right-hand 0.656" thread length hexagon head style 0.061" hole diameter 16 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.429" thread length dished hexagon head style 1.678" grip length 24 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 0.400" thread length hexagon head style 0.178" grip length 28 thread quantity per inch aluminum surface treated unjf thread series