Optical Instrument Window

Model / MPN: 8200495 | NSN: 1240-00-620-4979

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

1240-00-620-4979

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Diameter

Between 2.022 inches and 2.025 inches

Thickness

Between 0.418 inches and 0.458 inches

Bevel Depth

Between 0.020 inches and 0.030 inches

Refraction Index

1.5170

Polished Surface

Both

Dispersion

64.500 angstroms

Reflection Reducing Surface

Both

Polished Periphery

Not provided

Bevel Angle In Deg

Between 42.000 and 48.000

Material

Glass, optical, mil-g-174, grade b, type 517-645

Material

Glass, optical, mil-g-174, grade b, type 517-645

82004 Series Parts

Solicitations

Solicitation	Description	Qty	UOM	Close Date
SPE7M117T7560	Window, Optical Inst	4	EA	02/06/2017

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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8200495 Cross Reference

8200495
8200495
1240006204979