2a thread class right-hand 0.971" thread length spline extended washer head style 24 thread quantity per inch phosphate surface treated unf thread series
2a thread class right-hand 0.750" thread length button head style 28 thread quantity per inch C1rcumferential groove located 1/16 from thread end 0.045 in w by 0.180 in dia phosphate surface treated unf thread series
2a thread class right-hand 0.719" thread length flat chamfer head style 20 thread quantity per inch 0.062 in. by 45 degree chamfer on thd end unf thread series
2a thread class right-hand 1.062" thread length flat chamfer head style 20 thread quantity per inch chamfer on face of head 1/16 by 45 deg cadmium or zinc surface treated unf thread series
2a thread class left-hand 0.750" thread length flat chamfer head style 20 thread quantity per inch 0.062 in. by 45 deg chamfer on thd end unf thread series
