National Item Identification Number
00-531-6646
005316646
6650-00-531-6646
6650005316646
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)
19200
Reference Numbers (Part Numbers)
5316646
Required Categories
MATERIAL
STYLE DESIGNATOR
OVERALL LENGTH
BODY OUTSIDE DIAMETER
TAPER BORE MI
Required Description
ALUMINUM ALLOY 6061
B1 SPACER
0.340 INCHES NOMINAL
1.426 INCHES MAXIMUM
1.26