National Item Identification Number
01-285-9707
012859707
6650-01-285-9707
6650012859707
National Stock Number
Item Name
RING,RETAINING,OPTICAL ELEMENT
Federal Supply Class
6650
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)
53711
Reference Numbers (Part Numbers)
5525873
Required Categories
MATERIAL
SURFACE TREATMENT
OUTSIDE DIAMETER
SPECIAL FEATURES
III END ITEM ID
Required Description
BRASS
BLACK OXIDE, MIL-F-495
2.060 INCHES NOMINAL
125 MICROINCH SURFACE FINIS