8289260

View detailed technical data, stock status, and sourcing information for: 8289260
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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

6650-00-626-1891

Item Name Code

21884

Assigment Date

01/01/1963 (63 years ago)

0.100 inches nominal and 0.610 inches nominal axial thickness, 6.532 inches equivalent focal length, 0.710 inches nominal compound lens overall axial thickness, 1.650 inches nominal diameter, 0.531 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: 1.650 inches nominal
Axial Thickness: 0.100 inches nominal and 0.610 inches nominal
Compound Lens Overall Axial Thickness: 0.710 inches nominal
Compound Lens Edge Thickness: 0.531 inches nominal
Equivalent Focal Length: 6.532 inches
Back Focal Length: 7.274 inches
Refraction Index: 1.6490 nominal and 1.6200 nominal
Abbe Constant: 33.800 and 60.300
Compound Lens Style: doublet
Individual Lens Style: double concave and double convex
Element Left Surface Radius: 2.656 inches
Element Right Surface Radius: 1.663 inches
Material: glass optical
Material Document And Classification: mil-g-174, class 1, grade c mil spec single material response
Fsc Application Data: periscope,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
1240006261891	Optical Instrument Lens
8289260	Optical Instrument Lens

FAQs

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

What is the FSCG of the NSN 6650-00-626-1891?

The FSCG of the NSN 6650-00-626-1891 is 6650

Does the NSN 6650-00-626-1891 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-626-1891 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 6650-00-626-1891 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-626-1891 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 6650-00-626-1891 was assigned to the Federal Catalog?

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