6650-00-816-0506

Find complete technical information, availability, and procurement data for: 6650-00-816-0506
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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

6650-00-816-0506

Item Name Code

21884

Assigment Date

01/01/1962 (64 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.

5.404 inches equivalent focal length, 2.518 inches minimum and 2.520 inches maximum diameter, 0.590 inches nominal compound lens edge thickness, 0.846 inches nominal compound lens overall axial thickness, 0.689 inches nominal and 0.157 inches nominal axial thickness

Product Characteristics

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

Diameter: 2.518 inches minimum and 2.520 inches maximum
Axial Thickness: 0.689 inches nominal and 0.157 inches nominal
Compound Lens Overall Axial Thickness: 0.846 inches nominal
Compound Lens Edge Thickness: 0.590 inches nominal
Equivalent Focal Length: 5.404 inches
Back Focal Length: 5.225 inches
Front Focal Length: 5.018 inches
Refraction Index: 1.5170 nominal and 1.6490 nominal
Abbe Constant: 64.500 and 33.800
Compound Lens Style: doublet
Individual Lens Style: double convex and meniscus diverging
Element Left Surface Radius: -2.283 inches and 3.710 inches
Element Right Surface Radius: -2.283 inches and -6.036 inches
Material: glass optical
Material Document And Classification: mil-g-174, class 1, grade c mil spec single material response
Fsc Application Data: 1. fire control computing sights and devices

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
1575537	Optical Instrument Lens

FAQs

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

What is the FSCG of the NSN 6650-00-816-0506?

The FSCG of the NSN 6650-00-816-0506 is 6650

Does the NSN 6650-00-816-0506 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-816-0506 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 6650-00-816-0506 contain precious materials?

Precious metal content is unknown

Does NSN 6650-00-816-0506 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 6650-00-816-0506 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962