SM-D-804998

Optical instrument window

SM-D-804998 Description

4.725 inches width, 0.250 inches thickness, 4.825 inches length, material used in the manufacture of this optical part shall not contain thorium, other radioactive material, or any combination of nuclear materials in excess of 0.05 percent by weight as defined by the title 10, code of federal regulations, part 40.NO chips inside free aperture.All chips outside free aperture to be stoned .

Features

Materal used in the manufacture of this optical part shall not contain thorium, other radioactive material, or any combination of nuclear materials in excess of 0.05 percent by weight as defined by the title 10, code of federal regulations, part 40.No chips inside free aperture.All chips outside free aperture to be stoned

Properties of SM-D-804998

Width:
4.725 inches
Thickness:
0.250 inches
Length:
4.825 inches
Polished Periphery:
Not provided
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
NSN:
1240-01-063-1348
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 03/19/2024