National Item Identification Number
01-171-6944
011716944
5855-01-171-6944
5855011716944
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)
13074811
13074811
Required Categories
STYLE DESIGNATOR
SHOULDER DIAMETER
SHOULDER LENGTH
HOLE DIAMETER
OVERALL LEN
Required Description
F4 SHOULDERED
1.730 INCHES NOMINAL
0.050 INCHES NOMINAL
1.700 INCHES NOMINAL;