No other part numbers with same form, fit, and function found.
A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see cell, optical element. Excludes ring, externally threaded.
Classification: Military equipments not identified by kind
NSN 6650-01-406-5322
NSN 6620-01-642-1843
NSN 6685-00-453-3584
NSN 6610-01-474-5206
NSN 6320-01-021-6633
NSN 6320-01-574-1915
NSN 6220-01-578-1745
NSN 5855-01-263-7669
NSN 6685-00-800-2457
NSN 6650-01-571-7122
NSN 4140-01-196-6308
NSN 5935-01-391-3526