3a thread class right-hand 0.052" thread length headless (setscrew) head style 56 thread quantity per inch color black cadmium surface treated unc thread series
3a thread class right-hand 0.369" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unjf thread series
3a nut thread thread class right-hand nut thread 0.940" stud thread thread length 3.630" overall length 16 stud thread thread quantity per inch navy special project stepped uns stud thread thread series
3a nut thread thread class right-hand nut thread 0.940" stud thread thread length 24 nut thread thread quantity per inch navy special project unjs stud thread thread series
2a thread class 0.090" thread length flat chamfer head style navy special project pilot hole through slot drive 0.093 in. min, 0.098 in. max hole dia, 0.120 in. deep