National Item Identification Number
01-165-2177
011652177
5855-01-165-2177
5855011652177
National Stock Number
Item Name
RING,RETAINING,OPTICAL ELEMENT
Federal Supply Class
5855
Description
A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see RETAINER, OPTICAL ELEMENT. Excludes CELL, OPTICAL ELEMENT; NUT, PLAIN KNURLED; NUT, PLAIN ROUND; and RING, RETAINING.
Commercial and Government Entity Code (Supplier Data)
27777
LITTON SYSTEMS INC.
DBA ELECTRO-OPTICAL SYSTEMS
3414 HERRMANN DR.
GARLAND
TX
75041
972-840-7631
80063
Reference Numbers (Part Numbers)
SM-D-850408
SM-D-850408
Required Categories
MATERIAL
SURFACE TREATMENT
THREAD LOCATION
OUTSIDE DIAMETER
INTERNAL FLANGE
Required Description
ALUMINUM ALLOY, QQ-A-250/11, T6
PAINTED
INTERNAL
2.060 INCHES NOMINAL
0.125