2a thread class right-hand 0.750" thread length hexagon head style 0.094" grip length 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.800" thread length double hexagon w/hole head style 0.055" hole diameter 3.740" grip length 18 thread quantity per inch navy special project cadmium surface treated unjf thread series
2a thread class right-hand flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.969" grip length 18 thread quantity per inch cadmium mechanical lock surface treated unc thread series
3a nut thread a thread class right-hand nut thread a 1.470" nut thread a thread length 55.000" overall length 28 nut thread a thread quantity per inch unf nut thread a thread series