3a thread class right-hand 1.750" thread length flat chamfer head style 0.061" hole diameter 18 thread quantity per inch cadmium surface treated unrf thread series
3a thread class right-hand hexagon head style 32 thread quantity per inch two keyways longitudinally opposite each other passivate surface treated unf thread series
2a thread class right-hand 0.141" thread length fillister head style 40 thread quantity per inch navy special project cadmium surface treated unc thread series
3a thread class right-hand 0.578" thread length dished hexagon head style 0.678" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.512" thread length flat chamfer head style 24 thread quantity per inch passivate fastener surface treated unrc thread series
Used on spec item. 3a thread class right-hand 0.500" thread length hexagon head style 6.046" grip length 24 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.425" thread length dished hexagon head style 2.115" grip length 28 thread quantity per inch identify aluminum coating with black dye or paint on chamfer plus one pitch aluminum surface treated unjf thread series
