National Item Identification Number

00-800-4092
008004092
6650-00-800-4092
6650008004092

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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53711

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Reference Numbers (Part Numbers)

JANG174
TYPE517-645GRADEC
415275PC1
415275PC1

Required Categories

MATERIAL
REFRACTION INDEX
DISPERSION
POLISHED SURFACE
SURFACE FINISH
POLISH

Required Description

GLASS, OPTICAL, JAN-G-174, TYPE 517-645, GRADE C
1.5150 MINIMUM AND
1.5190 MAX