National Item Identification Number
01-090-8900
010908900
1680-01-090-8900
1680010908900
National Stock Number
Item Name
RETAINER,OPTICAL ELEMENT
Federal Supply Class
1680
Description
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.
Commercial and Government Entity Code (Supplier Data)
18876
Reference Numbers (Part Numbers)
10219544
Required Categories
Required Description