2a thread class right-hand 0.453" thread length wing no. 3 head style 20 thread quantity per inch thread relief groove 0.109 in. w by 0.180 in. max dia unc thread series
3a nut thread thread class right-hand nut thread 0.500" stud thread thread length 1.250" overall length 18 stud thread thread quantity per inch stud end 45.0 deg chamfer to root of threads, nut end 0.312 in. spherical radius unc stud thread thread series
3a nut thread thread class right-hand nut thread 0.625" stud thread thread length 1.750" overall length 18 stud thread thread quantity per inch stud end 45.0 deg chamfer to root of threads, nut end 0.312 in. spherical radius unc stud thread thread series
3a nut thread thread class right-hand nut thread 0.562" stud thread thread length 1.500" overall length 18 stud thread thread quantity per inch stud end 45.0 deg chamfer to root of threads, nut end 0.312 in. spherical radius unc stud thread thread series
3a nut thread thread class right-hand nut thread 0.562" stud thread thread length 1.375" overall length 16 stud thread thread quantity per inch first end 45.0 deg chamfer to root of threads, nut end 0.375 in. sperical radius unc stud thread thread series
3a nut thread thread class right-hand nut thread 0.625" stud thread thread length 1.500" overall length 18 stud thread thread quantity per inch first end 45.0 deg chamfer to root of threads, second end 0.312 in. spherical radius unc stud thread thread series
3a thread class right-hand 0.550" thread length bevel-conical head style 18 thread quantity per inch navy special project cadmium surface treated unf thread series