National Item Identification Number

01-156-8173
011568173
6650-01-156-8173
6650011568173

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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18876

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8A932

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HUMBOLDT MACHINE SHOP INC
105 PLAZA DRIVE
HUNTSVILLE
AL
35811
256-859-0283

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Reference Numbers (Part Numbers)

13143998
13143998
13143998

Required Categories

MATERIAL
SURFACE TREATMENT
THREAD LOCATION
THREAD SIZE
SCREW THREAD SERIES D

Required Description

ALUMINUM ALLOY, QQ-A-200/8, 6061, T6
ANODIZED, MIL-A-8625, TYPE 2, CLASS 2
INT