2a thread class right-hand flat chamfer head style 13 thread quantity per inch 3 slots in head 120.0 degrees apart, certified free from mercury contamination passivate surface treated unc thread series
2a thread class right-hand 0.127" thread length hexagon head style 28 thread quantity per inch passivate surface treated concentric hole threaded unf thread series
3a thread class right-hand 0.375" thread length headless (setscrew) head style 28 thread quantity per inch hole drilled in point 0.065 in. min. by 0.070 in.max. dia., 0.074 in deep passivate surface treated unf thread series
3a thread class right-hand 0.500" thread length oval countersunk head style 32 thread quantity per inch passivate screw surface treated unf thread series
3.975" inside diameter 4.142" outside diameter 0.148" major thickness straight gap ring style outside corner opposite inside beveled corner is beveled, 0.030 to 0.060 in. deep at an angle of 45.0 deg
2a nut thread a thread class right-hand nut thread a 2.000" nut thread a thread length 28.200" overall length 20 nut thread a thread quantity per inch unf nut thread a thread series
2a thread class right-hand 0.380" thread length knurled no. 4 head style 20 thread quantity per inch extended portion above knurled head 0.370 in. high 0.180 in. wide-centered passivate surface treated unc thread series
3a thread class right-hand 0.250" thread length fillister head style 32 thread quantity per inch selected item passivate surface treated unc thread series
3a thread class right-hand 0.188" thread length pan no. 2 head style 56 thread quantity per inch groove 0.020 x 45 chamfer located 0.038 from threaded end passivate surface treated unc thread series
