2475256

View detailed technical data, stock status, and sourcing information for: 2475256
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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

6650-00-789-8174

Item Name Code

22585

Assigment Date

01/01/1962 (64 years ago)

A light transmitting item consisting of a transparent, flat glass body having two plane-parallel surfaces, either with only nonabsorbing dielectric coatings or absorbing and nonabsorbing coatings of a thickness nearly equivalent to the wavelength of the transmitted light. Interference begins at the thin bordering surfaces of the coatings, the penetrating light waves being superimposed on the reflected light waves. The item can be installed in various optical insturments, to serve as an eye protecting device.

1.750 inches nominal outside diameter, 1.312 inches minimum and 1.385 inches maximum aperture diameter, 0.0620 inches nominal inner groove width, 1.385 inches nominal groove diameter, three 0.096 in. dia mtg holes equally spaced mounting configuration

Product Characteristics

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

Groove Diameter: 1.385 inches nominal
Outside Diameter: 1.750 inches nominal
Aperture Diameter: 1.312 inches minimum and 1.385 inches maximum
Inner Groove Width: 0.0620 inches nominal
Mounting Configuration: three 0.096 in. dia mtg holes equally spaced
Internal Flange Thickness: 0.125 inches nominal
Groove Location: inside face of flange
Material: aluminum alloy

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
2475256	Optical Element Retaining Ring
69301000	Optical Element Retaining Ring

FAQs

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

What is the FSCG of the NSN 6650-00-789-8174?

The FSCG of the NSN 6650-00-789-8174 is 6650

Does the NSN 6650-00-789-8174 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-789-8174 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 6650-00-789-8174 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-789-8174 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 6650-00-789-8174 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962