8644284

View detailed technical data, stock status, and sourcing information for: 8644284
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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

6650-00-119-3966

Item Name Code

21884

Assigment Date

10/18/1968 (57 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.

1.002 inches minimum and 1.042 inches maximum compound lens overall axial thickness, 16.560 inches equivalent focal length, 0.297 inches minimum and 0.317 inches maximum and 0.705 inches minimum and 0.725 inches maximum axial thickness, 15.807 inches back focal length, 3.097 inches minimum and 3.100 inches maximum diameter

Product Characteristics

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

Diameter: 3.097 inches minimum and 3.100 inches maximum
Axial Thickness: 0.297 inches minimum and 0.317 inches maximum and 0.705 inches minimum and 0.725 inches maximum
Compound Lens Overall Axial Thickness: 1.002 inches minimum and 1.042 inches maximum
Equivalent Focal Length: 16.560 inches
Back Focal Length: 15.807 inches
Refraction Index: 1.6490 nominal and 1.5880 nominal
Abbe Constant: 33.800 and 53.400
Compound Lens Style: doublet
Individual Lens Style: double concave and double convex
Element Left Surface Radius: 143.191 millimeters
Element Right Surface Radius: 6.256 inches
Special Features: front and back surfaces coated with magnesium fluoride
Material: glass optical
Material Document And Classification: mil-g-174,class 1,grade c,type 649-338 mil spec 1st material response and mil-g-174,class 1,grade c,type 588-534 mil spec 2nd material response
Fsc Application Data: collimator

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
6650001193966	Optical Instrument Lens
8644284	Optical Instrument Lens

FAQs

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

What is the FSCG of the NSN 6650-00-119-3966?

The FSCG of the NSN 6650-00-119-3966 is 6650

Does the NSN 6650-00-119-3966 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-119-3966 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 6650-00-119-3966 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-119-3966 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 6650-00-119-3966 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Fri, Oct 18, 1968