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 5920-01-641-6324
NSN 6610-00-958-0294
NSN 2925-01-502-2385
NSN 6130-01-309-3092
NSN 4140-01-387-2068
NSN 5895-01-087-0477
NSN 5915-00-163-4784
NSN 4140-00-547-8918
NSN 5985-01-583-5019
NSN 5965-00-578-8931
NSN 6150-01-542-4558
NSN 6610-00-020-2854