481120-4

View detailed technical data, stock status, and sourcing information for: 481120-4
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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

6650-00-157-9403

Item Name Code

21884

Assigment Date

01/01/1963 (63 years ago)

An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.

2.204 inches nominal diameter, 3.952 inches equivalent focal length, 1.023 inches nominal compound lens overall axial thickness, 0.157 inches nominal and 0.866 inches nominal axial thickness, 0.590 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: 2.204 inches nominal
Axial Thickness: 0.157 inches nominal and 0.866 inches nominal
Compound Lens Overall Axial Thickness: 1.023 inches nominal
Compound Lens Edge Thickness: 0.590 inches nominal
Equivalent Focal Length: 3.952 inches
Back Focal Length: 4.089 inches
Front Focal Length: 3.170 inches
Refraction Index: 1.6210 nominal and 1.5170 nominal
Abbe Constant: 36.200 and 64.500
Compound Lens Style: doublet
Individual Lens Style: double convex and plano-concave
Element Left Surface Radius: -5.139 inches and 6.693 inches
Element Right Surface Radius: -1.704 inches and 1.704 inches
Material: glass optical
Material Document And Classification: jan-g-174, grade c mil spec single material response
Fsc Application Data: gunsight mk 15 mod 2

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
481120-4	Optical Instrument Lens
481120PC4	Optical Instrument Lens
654752	Optical Instrument Lens
LD172589PC66	Optical Instrument Lens

FAQs

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

What is the FSCG of the NSN 6650-00-157-9403?

The FSCG of the NSN 6650-00-157-9403 is 6650

Does the NSN 6650-00-157-9403 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-157-9403 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 6650-00-157-9403 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-157-9403 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 6650-00-157-9403 was assigned to the Federal Catalog?

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