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 4140-01-275-5234
NSN 5965-00-564-4399
NSN 5855-01-174-2463
NSN 5999-01-371-7745
NSN 5945-01-410-9814
NSN 6645-00-979-6824
NSN 5910-01-521-4415
NSN 5915-01-381-3087
NSN 4140-01-215-1964
NSN 6620-01-128-0945
NSN 6150-01-243-3476
NSN 5975-00-690-3159