Optical Instrument Window

Model / MPN: 30091 | NSN: 1240-00-171-4177

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

1240-00-171-4177

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Width

Between 287.000 millimeters and 288.000 millimeters

Thickness

Between 18.800 millimeters and 19.200 millimeters

Length

Between 349.000 millimeters and 350.000 millimeters

Bevel Depth

2.000 millimeters

Refraction Index

1.5170

Dispersion

64.5 angstroms

Reflection Reducing Surface

One

Polished Periphery

Not provided

Bevel Angle In Deg

45.000

Material

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

Material

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

Fsc Application Data

Telescope mk 102 mod 3

30091 Series Parts

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.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

30091 Cross Reference

1235962