6650-00-851-3918

Find complete technical information, availability, and procurement data for: 6650-00-851-3918
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Federal Supply Group

Instruments and Laboratory Equipment

Federal Supply Classification

6650 Components and Accessories Test Equipment Optical Instruments

National Stock Number

6650-00-851-3918

Item Name Code

21884

Assigment Date

01/01/1963 (63 years ago)

An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see window, optical instrument. Excludes:reticle, optical instrument.

0.150 inches nominal and 0.220 inches nominal axial thickness, 1.496 inches nominal diameter, 8.712 inches equivalent focal length, 0.370 inches nominal compound lens overall axial thickness, 0.312 inches nominal compound lens edge thickness

Product Characteristics

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

Diameter: 1.496 inches nominal
Axial Thickness: 0.150 inches nominal and 0.220 inches nominal
Compound Lens Overall Axial Thickness: 0.370 inches nominal
Compound Lens Edge Thickness: 0.312 inches nominal
Equivalent Focal Length: 8.712 inches
Back Focal Length: 8.851 inches
Refraction Index: 1.6210 nominal and 1.5230 nominal
Abbe Constant: 36.200 and 58.600
Compound Lens Style: doublet
Individual Lens Style: meniscus diverging and double convex
Element Left Surface Radius: 6.831 inches
Element Right Surface Radius: 2.160 inches
Material: glass optical
Material Document And Classification: mil-g-174, class 1, grade c mil spec single material response
Fsc Application Data: telescope,elbow,integrated with fire control equipment

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:

Part Number	Name
8615943	Optical Instrument Lens

FAQs

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

What is the FSCG of the NSN 6650-00-851-3918?

The FSCG of the NSN 6650-00-851-3918 is 6650

Does the NSN 6650-00-851-3918 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-851-3918 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 6650-00-851-3918 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-851-3918 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 6650-00-851-3918 was assigned to the Federal Catalog?

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

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Pricing

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