Optical Instrument Window

Model / MPN: 176149PC4 | NSN: 1240-00-171-4213

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.

Product Details

NATO Stock Number

1240-00-171-4213

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Diameter

64.000 millimeters

Thickness

3.500 millimeters

Bevel Depth

1.500 millimeters

Refraction Index

1.5170

Polished Surface

Both

Reflection Reducing Surface

Both

Polished Periphery

Not provided

Bevel Angle In Deg

45.000

Material

Glass, optical, jan-g-174, type 517-645, grade a

Material

Glass, optical, jan-g-174, type 517-645, grade a

Fsc Application Data

Rangefinder mk 37 mod 3

176149PC Series Parts

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Optical Instrument Window

Pricing and Availability

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176149PC4 Cross Reference