265451

View detailed technical data, stock status, and sourcing information for: 265451
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Federal Supply Group

Fire Control Equipment

Federal Supply Classification

1240 Optical Sighting and Ranging Equipment

National Stock Number

1240-00-382-5897

Item Name Code

22585

Assigment Date

01/01/1963 (63 years ago)

A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see retainer, optical element. Excludes:cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.

inside face of flange groove location, 3.125 inches nominal aperture diameter, 0.062 inches nominal internal flange thickness, gun sight mk15 end item identification, 3.375 inches nominal outside diameter

Product Characteristics

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

Outside Diameter: 3.375 inches nominal
Aperture Diameter: 3.125 inches nominal
End Item Identification: gun sight mk15
Internal Flange Thickness: 0.062 inches nominal
Groove Location: inside face of flange
Material: copper alloy
Surface Treatment: fnaaf0 and enamel

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
265451	Optical Element Retaining Ring
481117-4	Optical Element Retaining Ring
481117PC4	Optical Element Retaining Ring
654780	Optical Element Retaining Ring

FAQs

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

What is the FSCG of the NSN 1240-00-382-5897?

The FSCG of the NSN 1240-00-382-5897 is 1240

Does the NSN 1240-00-382-5897 have a Schedule B code assigned?

Yes, the Schedule B code is 9803200000

Does NSN 1240-00-382-5897 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 1240-00-382-5897 contain precious materials?

Item does not contain precious metal.

Does NSN 1240-00-382-5897 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 1240-00-382-5897 was assigned to the Federal Catalog?

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