National Item Identification Number
01-171-6945
011716945
5855-01-171-6945
5855011716945
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)
13074922
13074922
Required Categories
STYLE DESIGNATOR
SHOULDER DIAMETER
SHOULDER LENGTH
HOLE DIAMETER
OVERALL LEN
Required Description
F4 SHOULDERED
0.920 INCHES NOMINAL
0.265 INCHES NOMINAL
0.850 INCHES NOMINAL;