National Item Identification Number
00-087-1555
000871555
5855-00-087-1555
5855000871555
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
Reference Numbers (Part Numbers)
SC-C-614587
Required Categories
MATERIAL
SURFACE TREATMENT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
OVER
Required Description
ALUMINUM ALLOY 6061
ANODIZE
MIL-STD-171 FINISH NO. 7.2.2 MIL STD SINGLE TREATM