National Item Identification Number
01-285-9706
012859706
6650-01-285-9706
6650012859706
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)
5525583
Required Categories
MATERIAL
SURFACE TREATMENT
THREAD LOCATION
SCREW THREAD SERIES DESIGNATOR
TH
Required Description
BRASS OR
ALUMINUM ALLOY
BLACK OXIDE, MIL-F-495
INTERNAL
UNS
3B
1.0150 TO 1