3a nut thread thread class right-hand nut thread 0.620" stud thread thread length 1.239" overall length 20 nut thread thread quantity per inch torx drive on stud end; 0.179 in. lg; undercut on both ends 0.188 in. dia, 0.080 in. lg phosphate surface treated unc nut thread thread series
right-hand nut thread 4.312" nut thread thread length 9.688" overall length 9 nut thread thread quantity per inch navy special project stud end of point threaded 0.500 in. dia by 0.562 in. long
Used on B-2. 3a nut thread thread class left-hand nut thread 0.997" overall length used on 70253-10:next assy 70253-10 passivate surface treated shouldered
2a nut thread thread class right-hand nut thread 1.232" stud thread thread length 4.720" overall length 9 nut thread thread quantity per inch furnished with 0.308 in. lg by 0.705 in. dia undercut on stud end unc nut thread thread series
3a nut thread thread class right-hand nut thread 0.325" nut thread thread length 0.678" overall length 32 nut thread thread quantity per inch internal socket on each end, 0.0791 in. min, 0.806 in. max width across flats shouldered unjf nut thread thread series
2a nut THREAD2a stud thread thread class right-hand nut threadright-hand stud thread 3.372" nut THREAD0.812" stud thread thread length 9.620" overall length 16 nut THREAD16 stud thread thread quantity per inch navy special project thread releived on each end 0.188 in. lg shouldered unc nut threadunc stud thread thread series