6695-682

Optical instrument window

6695-682 Description

3.590 inches diameter, 0.250 inches thickness, glass, optical, mil-g-174, grade b, type 517-645 material, glass, optical, mil-g-174, grade b, type 517-645 iii material.

Properties of 6695-682

Diameter:
3.590 inches
Thickness:
0.250 inches
Polished Surface:
Both
Polished Periphery:
Not provided
Material:
Glass, optical, mil-g-174, grade b, type 517-645
Material:
Glass, optical, mil-g-174, grade b, type 517-645
NSN:
1240-01-050-9530
Description:
Window,optical Instrument
Cage Code:

Definition Optical Instrument Window

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.

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Last modified 03/28/2024