National Item Identification Number
01-052-1751
010521751
6650-01-052-1751
6650010521751
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)
19204
Reference Numbers (Part Numbers)
10549288
Required Categories
MATERIAL
STYLE DESIGNATOR
OVERALL LENGTH
FLANGE WIDTH
STRAIGHT BORE INSIDE D
Required Description
ALUMINUM ALLOY
B8 SPACER
0.641 INCHES NOMINAL
0.235 INCHES NOMINAL
1.938 INC