National Item Identification Number

00-701-8081
007018081
6650-00-701-8081
6650007018081

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)

2478955

Required Categories

MATERIAL
REFRACTION INDEX
POLISHED SURFACE
REFLECTION REDUCING SURFACE
POLIS

Required Description

GLASS, OPTICAL, JAN-G-174, TYPE 517-645, GRADE B
1.5170 NOMINAL
BOTH
BOTH
NO