2a thread class right-hand 0.750" thread length hexagon head style 28 thread quantity per inch flat on thread 0.040 in. min, 0.070 in. max length tin surface treated unf thread series
2a thread class right-hand 0.440" thread length hexagon head style 16 thread quantity per inch 30 degree chamfer both sides bolt head, 0.060 in. by 90 deg chamfer thread end, 0.020 in. radius at inside corner of head cadmium surface treated unc thread series
2a thread class right-hand 0.248" thread length flat chamfer head style 40 thread quantity per inch third shoulder dia 0.265 in. min chromium surface treated unc thread series
3a thread class right-hand 1.093" thread length hexagon head style 3.438" grip length 16 thread quantity per inch passivate surface treated unf thread series
2a thread class right-hand 0.578" thread length square head style 20 thread quantity per inch w/groove between shoulder cadmium surface treated unf thread series
2a thread class right-hand 0.313" thread length flat chamfer head style 24 thread quantity per inch thd relieved groove 0.062 in.w by 0.190 in.dia passivate surface treated unc thread series
2a thread class right-hand 0.500" thread length knurled no. 2 head style 24 thread quantity per inch slotted protrusion on top of head 0.312 in. dia by 0.125 in. high unc thread series
