1240-00-155-1366

Find complete technical information, availability, and procurement data for: 1240-00-155-1366
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Federal Supply Group

Fire Control Equipment

Federal Supply Classification

1240 Optical Sighting and Ranging Equipment

National Stock Number

1240-00-155-1366

Item Name Code

10908

Assigment Date

01/01/1963 (63 years ago)

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.

3.1 millimeters nominal thickness, 0.7 millimeters nominal bevel depth, 1.5230 nominal refraction index, 24.0 millimeters nominal diameter, rangefinder mk57 end item identification

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Diameter: 24.0 millimeters nominal
Thickness: 3.1 millimeters nominal
End Item Identification: rangefinder mk57
Bevel Depth: 0.7 millimeters nominal
Refraction Index: 1.5230 nominal
Polished Surface: both
Polished Periphery: not provided
Bevel Angle In Deg: 45.000 nominal
Material: glass optical location not otherwise specified
Material Document And Classification: jan-g-174, grade c mil spec single material response location not otherwise specified

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Part Number	Name
278693PC4	Optical Instrument Window

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 1240-00-155-1366?

The FSCG of the NSN 1240-00-155-1366 is 1240

Does the NSN 1240-00-155-1366 have a Schedule B code assigned?

Yes, the Schedule B code is 9803200000

Does NSN 1240-00-155-1366 require demilitarization?

Usml or ccl military items - demil required. Destroy item and components to prevent restoration or repair to a usable condition. (note 5).

Does NSN 1240-00-155-1366 contain precious materials?

Item does not contain precious metal.

Does NSN 1240-00-155-1366 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 1240-00-155-1366 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963

Professional Distribution

Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.

ITAR Registered
DDTC Registered
HAZMAT Certified
AS9120 Quality Standards
100% Quality Inspections

Pricing

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Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

Professional Distribution

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