2a thread class right-hand 0.930" thread length oval countersunk head style 24 thread quantity per inch navy special project cadmium surface treated unc thread series
right-hand 0.621" thread length flat chamfer head style 20 thread quantity per inch navy special project cadmium surface treated whitworth thread series
3a thread class right-hand 0.657" thread length flat chamfer head style 13 thread quantity per inch relieved under head 0.093 in. w 0.593 in. dia. of relief phosphate surface treated unc thread series
2a thread class right-hand 0.174" thread length pan no. 2 head style 32 thread quantity per inch 0.03 in., 45 deg chamfer at thd end zinc surface treated unc thread series
2a thread class right-hand 0.281" thread length flat chamfer head style 40 thread quantity per inch top of head chamfered 1/32 in. by 45 deg passivate surface treated unc thread series
