National Item Identification Number

01-437-6798
014376798
6650-01-437-6798
6650014376798

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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19200

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Reference Numbers (Part Numbers)

11733412

Required Categories

MATERIAL
OVERALL THICKNESS
STYLE DESIGNATOR
OVERALL LENGTH
STRAIGHT BORE INS

Required Description

ALUMINUM ALLOY
0.147 INCHES MAXIMUM
B3 SPACER
0.906 INCHES NOMINAL
3.940 INC