5316359

View detailed technical data, stock status, and sourcing information for: 5316359
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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

6650-00-531-6359

Item Name Code

21884

Assigment Date

01/01/1963 (63 years ago)

A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes:laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes:disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.

2.324 inches equivalent focal length, 0.576 inches nominal compound lens overall axial thickness, 0.506 inches nominal and 0.070 inches nominal axial thickness, 1.374 inches nominal diameter, 0.338 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: 1.374 inches nominal
Axial Thickness: 0.506 inches nominal and 0.070 inches nominal
Compound Lens Overall Axial Thickness: 0.576 inches nominal
Compound Lens Edge Thickness: 0.338 inches nominal
Equivalent Focal Length: 2.324 inches
Back Focal Length: 1.974 inches
Refraction Index: 1.5170 nominal and 0.6170 nominal
Abbe Constant: 64.500 and 66.600
Compound Lens Style: doublet
Individual Lens Style: double convex and meniscus diverging
Element Left Surface Radius: -1.529 inches and 1.269 inches
Element Right Surface Radius: -1.529 inches and 6.597 inches
Material: glass optical
Material Document And Classification: jan-g-174, grade c mil spec single material response
Fsc Application Data: telescope,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
5316359	Optical Instrument Lens

FAQs

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

What is the FSCG of the NSN 6650-00-531-6359?

The FSCG of the NSN 6650-00-531-6359 is 6650

Does the NSN 6650-00-531-6359 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-531-6359 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 6650-00-531-6359 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-531-6359 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 6650-00-531-6359 was assigned to the Federal Catalog?

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