Aluminum alloy, qq-a-601 or ams 4217; 2.280 in. Lg; 2.280 in. W; 1.030 in. Hl anodized, mil-a-8625, type 1; one hole 1.000 in. Diameter w/cbore 1.1024 in. Min 1 1029 in. Max diameter by 0.966 in. Min 0.968 in. Max dp; four 0.211 in. Min 0.217 in. Max diameter mtg holes on 1.812 in. By 1.812 in. Mtg centers; two thd tapped mtg holes 0.138-32 unc-2b; one lip 0.440 in. Radius on one side
