6650-00-520-4757

Find complete technical information, availability, and procurement data for: 6650-00-520-4757
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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

6650-00-520-4757

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.

1.141 inches equivalent focal length, 0.211 inches nominal compound lens edge thickness, 0.394 inches nominal compound lens overall axial thickness, 0.689 inches nominal diameter, 0.335 inches nominal and 0.430 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: 0.689 inches nominal
Axial Thickness: 0.335 inches nominal and 0.430 inches nominal
Compound Lens Overall Axial Thickness: 0.394 inches nominal
Compound Lens Edge Thickness: 0.211 inches nominal
Equivalent Focal Length: 1.141 inches
Back Focal Length: 0.905 inches
Refraction Index: 1.5411 nominal and 1.6170 nominal
Abbe Constant: 36.600 and 59.900
Compound Lens Style: doublet
Individual Lens Style: double convex and meniscus diverging
Element Left Surface Radius: -0.629 inches and 0.473 inches
Element Right Surface Radius: -0.473 inches and 3.351 inches
Material: glass optical
Material Document And Classification: jan-g-174, grade c mil spec single material response

FAQs

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

What is the FSCG of the NSN 6650-00-520-4757?

The FSCG of the NSN 6650-00-520-4757 is 6650

Does the NSN 6650-00-520-4757 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-520-4757 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 6650-00-520-4757 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-520-4757 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 6650-00-520-4757 was assigned to the Federal Catalog?

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