11507715

Optical instrument window

11507715 Description

4.248 inches diameter, 0.200 inches thickness, glass, optical, MIL-G-174, class 1, grade a, type 517-642 material, glass, optical, MIL-G-174, class 1, grade a, type 517-642 iii material.

Properties of 11507715

Diameter:
Between 4.248 inches and 4.250 inches
Thickness:
Between 0.200 inches and 0.210 inches
Bevel Depth:
Between 0.038 inches and 0.053 inches
Polished Surface:
Both
Reflection Reducing Surface:
Both
Polished Periphery:
Provided
Bevel Angle In Deg:
Between 20.000 and 40.000
Material:
Glass, optical, mil-g-174, class 1, grade a, type 517-642
Material:
Glass, optical, mil-g-174, class 1, grade a, type 517-642
Fsc Application Data:
Target designator
NSN:
1240-01-073-1629
Description:
Window,optical Instrument
Cage Code:
66429

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 11/14/2024