National Item Identification Number
01-172-2228
011722228
5855-01-172-2228
5855011722228
National Stock Number
Item Name
RETAINER,OPTICAL ELEMENT
Federal Supply Class
5855
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)
04939
Reference Numbers (Part Numbers)
13074513
13074513
Required Categories
MATERIAL
SURFACE TREATMENT
DIAMETER
WIDTH
THE MANUFACTURERS DATA
MANUFACTUR
Required Description
ALUMINUM ALLOY, QQ-A-200/8
ANODIZED, MIL-A-8625, TYPE 2, CLASS 2
2.311 INCHES