Item has 4 mtg holes diameter 0.218 to0.224 in., c to c dist btwn holes along lg 4.465 in., c to c dist btwn holes along width on 1 end 2.470 in. & 2.000 in. On opposite end; dist from edge to hole cntr along lg 0.320 in., & along width 0.165 in.; item requires 1 aluminum alloy stop block, qq-a-225/8 cmpsn 6061-t6, that had od of 0.500 in.& is0.360 to 0.365 in. In hgth, block requires a rivet p/n ms20426ad6, installed iaw mil-std-403, head to be flush to 0.010 in. Below ssurface; item is used on lau 129a launcher
A metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting another item and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See support, as modified. Do not use if a more specific name applies.
NSN 5930-01-333-8589
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NSN 4140-01-567-5044