O/a diameter 0.870 in.; inside raised spherical diameter 0.500 in.; o/a w 0.080 in.; thk 0.011 to 0.013 in.; 3 outside mounting holes 0.083 to 0.088 in. Diameter through equally spaced w/0.003 in. On 0.750 in. Diameter circle; material, steel per qq-s-698, no.5; finish, black oxide optional per mil-c-13924 cl 1
