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 6105-01-456-0169
NSN 6320-00-905-0543
NSN 5895-01-205-8360
NSN 6240-01-171-0374
NSN 5996-01-010-3816
NSN 6240-01-388-8407
NSN 5895-01-444-9501
NSN 6130-01-156-9753
NSN 6150-00-481-0675
NSN 6150-01-357-7865
NSN 5910-01-063-4506
NSN 5960-00-140-9583