National Item Identification Number
01-129-0998
011290998
5855-01-129-0998
5855011290998
National Stock Number
Item Name
SPACER,OPTICAL ELEMENT
Federal Supply Class
5855
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)
80063
96214
Reference Numbers (Part Numbers)
SM-C-805322-3
2035322-3
Required Categories
MATERIAL
STYLE DESIGNATOR
OVERALL LENGTH
BODY OUTSIDE DIAMETER
THE MANUFACTU
Required Description
ALUMINUM ALLOY
B3 SPACER
0.560 INCHES NOMINAL
0.188 INCHES MAXIMUM
80063
SM