3a nut thread thread class right-hand nut thread 0.938" stud thread thread length 2.570" overall length 16 stud thread thread quantity per inch nut end tapped 1/4-28 unf-1b, 0.320 in. min deep cadmium surface treated unf nut thread thread series
3a nut thread thread class right-hand nut thread 0.928" stud thread thread length 2.560" overall length 16 stud thread thread quantity per inch nut end tapped 1/4-28 unf-18, 0.320 in. min deep cadmium surface treated unf nut thread thread series
3a nut thread thread class right-hand nut thread 0.938" stud thread thread length 2.395" overall length 16 stud thread thread quantity per inch 0.342 to 0.352 in. dia unthreaded portion unf nut thread thread series
2a nut thread thread class right-hand 0.450" thread length 8.900" overall length 24 nut thread thread quantity per inch thru hole lg of stud 0.072 in. dia unf thread series