3a nut thread thread class right-hand nut thread 0.580" nut thread thread length 6.790" overall length 20 nut thread thread quantity per inch one reamed hole 0.1250 to 0.1254 in.diameter through stud 2.340 to 2.360 in.from end unf nut thread thread series
3a nut thread thread class right-hand nut thread 0.813" stud thread thread length 4.312" overall length 14 stud thread thread quantity per inch navy special project uns stud thread thread series