right-hand nut assembly; c/o 2 ring, p/n 12337133; 2 screw, p/n MS18154-122; 2 pin, p/n MS9390-700; 1.880 high; M160X3 metric inside dia; 7.000 dist between holes; final protective finish: clean per spec tt-c-490 treat, type i or iii, spec tt-c-490 apply primer spec tt-p-636, tt-p-664 or mil-p-52977; topcoat color forest green, spec mil-e-52798; used on M1E1