National Item Identification Number
00-450-1739
004501739
6650-00-450-1739
6650004501739
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)
89944
Reference Numbers (Part Numbers)
415655-7
415655-7
Required Categories
MATERIAL
REFRACTION INDEX
DISPERSION
POLISHED SURFACE
POLISHED PERIPHERY
DI
Required Description
GLASS, MIL-F-12717, TYPE 3
1.5170 NOMINAL
64.2 ANGSTROMS NOMINAL
BOTH
NOT PR