Chamfer 0.020 in. By 45 degrees on id of flange end. One slot 0.062 in. Wide, 0.060 in. Deep by 45 degrees on face of flange end.
A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see retainer, optical element. Excludes cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.
Classification: Military equipments not identified by kind
NSN 5975-00-855-7058
NSN 6145-01-248-3373
NSN 2925-01-434-6945
NSN 5905-01-517-5645
NSN 6135-01-393-4746
NSN 6650-01-279-0658
NSN 6150-01-485-9199
NSN 6620-01-500-9847
NSN 6145-01-141-0214
NSN 2925-01-577-0004
NSN 4140-01-432-4027
NSN 5920-00-761-0134