1.988 in. - 1.990 in. Od including retaining lug; 1.270 in. Id where 4 mounting holes are located, these holes anre c'bore 0.406 x .12d with a dia. 0.159 in. - 0.164 in.
A flat, rectangular shaped item, with holes, used to join or attach two surfaces in the same plane by means of screws, bolts, and the like.
NSN 5998-01-126-8382
NSN 5895-00-862-5564
NSN 6645-01-578-7959
NSN 6145-01-616-9653
NSN 5990-01-425-2175
NSN 5905-00-854-9736
NSN 5996-00-338-7089
NSN 5999-00-617-1122
NSN 5855-01-460-9954
NSN 5910-01-465-6073
NSN 5855-01-023-3727
NSN 5935-01-459-6100