2a thread class right-hand 1.500" thread length hexagon head style 2.500" grip length 12 thread quantity per inch 0.062 in. by 45 deg chamfer on thd end unf thread series
2a thread class right-hand 1.281" thread length hexagon countersunk head style 8 thread quantity per inch chamfer on threaded end 0.125 in. by 30 deg unc thread series
2a thread class right-hand 1.250" thread length flat countersunk undercut head style 11 thread quantity per inch furnished w/1 hex nut unc thread series
2a nut thread a thread class right-hand nut thread a 1.500" nut thread a thread length 16.625" overall length 20 nut thread a thread quantity per inch unf nut thread a thread series