National Item Identification Number
01-056-9920
010569920
6650-01-056-9920
6650010569920
National Stock Number
Item Name
WINDOW,OPTICAL INSTRUMENT
Federal Supply Class
6650
Description
A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
7361252
Required Categories
SURFACE FINISH
DIAMETER
THICKNESS
THE MANUFACTURERS DATA
MANUFACTURERS CODE;
Required Description
POLISHED
1.623 INCHES MINIMUM AND
1.625 INCHES MAXIMUM
0.140 INCHES MINIMUM A