3000049

Optical instrument window

3000049 Description

28.950 inches diameter, 3.900 inches thickness, polished surface finish, glass, optical, mil-g-174, class 1, grade a, type 517-645 material.

Properties of 3000049

Diameter:
Between 28.950 inches and 29.000 inches
Thickness:
Between 3.900 inches and 4.100 inches
Surface Finish:
Polished
Bevel Depth:
Between 0.250 inches and 0.500 inches
Polished Surface:
Both
Diffusion Producing Surface:
Both
Polished Periphery:
Not provided
Bevel Angle In Deg:
Between 30.000 and 60.000
Material:
Glass, optical, mil-g-174, class 1, grade a, type 517-645
Material:
Glass, optical, mil-g-174, class 1, grade a, type 517-645
NSN:
1240-00-025-0241
Description:
Window,optical Instrument
Cage Code:
10001

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 11/17/2024