3a all ends thread class 1.834" overall length 3 0.063 dia holes through alternate hex points for safety wire anodize body surface treated male coupling half unjf all ends thread series
3a 2nd end thread class do not dupe to other nsn; designed for unique application on: M981, M901, and M901A1 t.o.w. vehicle; hex size designed for confined clearance in the box of a hydraulic hand control assy; between a hydraulic line unjf 2nd end thread series
2a 1st end thread class 20 1st end thread quantity per inch counterbored 0.382 in. to 0.387 in., 0.070 in. to 0.080 in. deep both ends; extra strong uns 1st end thread series
Used on helicopter, kiowa oh-58 a&c. 3a 1st end thread class 4 2nd end bolt hole quantity weapon system essential passivate surface treated unef 1st end thread series
