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 6610-00-527-8892
NSN 6220-01-579-3138
NSN 5925-00-732-7530
NSN 5990-01-110-8979
NSN 5930-01-303-2916
NSN 6220-01-239-3135
NSN 5999-00-221-4615
NSN 6610-01-433-2219
NSN 6150-01-530-4357
NSN 5985-01-459-0615
NSN 5920-00-378-1395
NSN 6130-01-522-5788