National Item Identification Number

00-450-1744
004501744
6650-00-450-1744
6650004501744

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)

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89944

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Reference Numbers (Part Numbers)

1575487

Required Categories

MATERIAL
REFRACTION INDEX
POLISHED SURFACE
REFLECTION REDUCING SURFACE
POLIS

Required Description

GLASS, OPTICAL, MIL-G-174, GRADE B, TYPE 522-595
1.5220 NOMINAL
BOTH
ONE
NOT