3a nut thread thread class right-hand nut thread 1.120" nut thread thread length 2.590" overall length 11 nut thread thread quantity per inch navy special project 0.563 in. min 0.575 in. max taper thd on stud end unc nut thread thread series
2a nut thread thread class right-hand nut thread 0.562" stud thread thread length 1.812" overall length 16 nut thread thread quantity per inch lok thd located on nut end cadmium surface treated unc nut thread thread series
3a nut thread thread class right-hand nut thread 0.880" stud thread thread length 2.120" overall length 20 nut thread thread quantity per inch 0.060 in. by 45 deg chamfer on stud end, 0.620 in. crown on nut end cadmium surface treated unf nut thread thread series