3a nut thread thread class right-hand nut thread 0.688" stud thread thread length 1.950" overall length 20 stud thread thread quantity per inch navy special project cadmium surface treated uns stud thread thread series
3a nut thread thread class right-hand nut thread 0.562" nut thread thread length 1.552" overall length 20 stud thread thread quantity per inch 0.221 in. min 0.231 in. max dia of unthreaded portion cadmium surface treated unc stud thread thread series
2a nut thread thread class right-hand nut thread 0.500" stud thread thread length 4.500" overall length 20 nut thread thread quantity per inch wrenching feature 0.156 in. dia by 0.094 in. w by 0.188 in. h on nut thread end unc nut thread thread series
3a nut thread thread class right-hand nut thread 1.625" stud thread thread length 7.000" overall length 8 stud thread thread quantity per inch unthreaded portion on stud end un nut thread thread series