Used on aa49e-27 h60s. 0.876" hole diameter washer, flat washer, rear guide; next higher assembly 3392AS1607; system used on a/A49e-27 mh-60s/M197 oxide surface treated
Used on airport surveillance detection equipment 3 (asde3). asde-3 mil spec steel flat washer, zinc-plated, 1/2" screw size, ms-51412-28 0.500" id. comes from vendor in package of 50; but, only need qty 1 per unit. this goes on nha asde-3 50mm belt tensioner nsn: 5840-01-319-8437, p/n 187861-201