2a nut thread thread class left-hand nut thread 0.969" stud thread thread length 16 nut thread thread quantity per inch stamp l for lh thds on nut end, nut end has 0.156 in. length 60.0 deg chamfer unf nut thread thread series
3a thread class right-hand 1.750" thread length 2.344" overall length 24 thread quantity per inch countersink both sides of eye, 0.125 in. deep at 30 deg angle zinc surface treated round, closed unf thread series
3a stud thread thread class 0.938" stud thread thread length 2.125" overall length 12 nut thread thread quantity per inch both ends chamfered 0.062 in. lg by 45 deg unf stud thread thread series