2a thread class right-hand 0.880" thread length square extended washer head style 13 thread quantity per inch with 0.480 in. min, 0.500 in. square unthreaded portion between shoulder unc thread series
3a thread class right-hand 0.526" thread length double hexagon w/hole head style 24 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.875" thread length hexagon head style 20 thread quantity per inch under side of head is chamfered 10 degrees passivate surface treated unf thread series
3a thread class right-hand 0.680" thread length double hexagon w/hole head style 20 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.751" thread length spline drive shear head head style 18 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.751" thread length spline drive shear head head style 18 thread quantity per inch passivate surface treated unjf thread series