Used on mrap cougar. 0.377" hole diameter 0.680" outside diameter 0.094" material thickness washer lock-spring, helical regular (medium) series zinc surface treated split helical-right hand
3b thread class right-hand 32 thread quantity per inch sleeve material, corrosion-resisting steel, per qq-s-763, class 304 or 305, condition a, or armco 1b-9lw; expander; corrosion-resisting steel, class 431 per mil-s-1B732, condition ht-125