1073976

View detailed technical data, stock status, and sourcing information for: 1073976
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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

6650-00-450-1742

Item Name Code

21884

Assigment Date

12/10/1969 (56 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.

0.276 inches nominal compound lens overall axial thickness, 57.324 inches equivalent focal length, 56.689 inches back focal length, 0.158 inches nominal and 0.118 inches nominal axial thickness, 0.787 inches nominal diameter

Product Characteristics

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

Diameter: 0.787 inches nominal
Axial Thickness: 0.158 inches nominal and 0.118 inches nominal
Compound Lens Overall Axial Thickness: 0.276 inches nominal
Equivalent Focal Length: 57.324 inches
Back Focal Length: 56.689 inches
Refraction Index: 1.5170 nominal and 1.6220 nominal
Abbe Constant: 64.200 and 36.000
Compound Lens Style: doublet
Individual Lens Style: double convex and plano-concave
Special Features: two parallel red lines on flat surface of lens
Material: glass optical
Material Document And Classification: mil-g-174,grade b,type 517-642 mil spec 1st material response and mil-g-174,grade b,type 622-360 mil spec 2nd material response

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
1073976	Optical Instrument Lens

FAQs

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

What is the FSCG of the NSN 6650-00-450-1742?

The FSCG of the NSN 6650-00-450-1742 is 6650

Does the NSN 6650-00-450-1742 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-450-1742 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 6650-00-450-1742 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-450-1742 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 6650-00-450-1742 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Dec 10, 1969