National Item Identification Number

00-186-5966
001865966
6650-00-186-5966
6650001865966

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)

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19200

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Reference Numbers (Part Numbers)

8620178

Required Categories

SURFACE TREATMENT
THREAD LOCATION
THREAD SIZE
SCREW THREAD SERIES DESIGNATOR;

Required Description

ANODIZED BLACK
INTERNAL
1.344 IN.-32
UNS
2B
0.187 INCHES
RIGHT-HAND
0.281