National Item Identification Number

01-171-6964
011716964
6650-01-171-6964
6650011716964

National Stock Number

Item Name

SPACER,OPTICAL ELEMENT

Federal Supply Class

6650

Description

A tubular shaped item designed to maintain a predetermined distance between optical elements, such as lenses, reticles, and the like. The bore may be straight, tapered or counterbored, and may have annular serrations to converge or diverge light rays. The surfaces, which mate with the optics, are usually chamfered, concave, and/or have a specified finish designation in the range of 1 to 125 microinches arithmetical average (AA). See also SPACER, SLEEVE and CELL, OPTICAL ELEMENT.

Commercial and Government Entity Code (Supplier Data)

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04939

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Reference Numbers (Part Numbers)

13074981
13074981

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
STYLE DESIGNATOR
OVERALL LENGTH

Required Description

ALUMINUM ALLOY 6061
QQ-A-200/8,T6511 FED SPEC SINGLE MATERIAL RESPONSE
B3 SPAC