Used on mrap - unique nsn - 3 mrap variants. nut, valve adjusting screw material: class 10 cems a-31, part 11 except proof load 50, 000 n min.; approx. mass (weight) finish part 6.35 g
2b thread class right-hand 24 thread quantity per inch nut, lock-machine screw hex serrated large washer head finish:zinc chromate; typical useage:sheet metal fasteners chromate zinc surface treated
Used on end item nsn: 3805-01-552-4485; skid steer loader, type ii. right-hand hex serrated flange nut-metric tempered to a surface hardness of 79 to 86 HR15n; core hardness is 25 to 34 hrc; material designated as special property class 8