National Item Identification Number

01-391-4461
013914461
6650-01-391-4461
6650013914461

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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12004

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NAVAL SEA SYSTEMS COMMAND LOGISTICS
SUPPORT ENGINEERING ACTIVITY
CODE 00
2020
MECHANICSBURG
PA
17055
717-605-3461

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Reference Numbers (Part Numbers)

9240-003-76

Required Categories

MATERIAL
OUTSIDE DIAMETER
INTERNAL FLANGE THICKNESS

Required Description

ALUMINUM
1.680 INCHES NOMINAL
0.047 INCHES NOMINAL