1240-01-078-8279

Find complete technical information, availability, and procurement data for: 1240-01-078-8279
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Federal Supply Group

Fire Control Equipment

Federal Supply Classification

1240 Optical Sighting and Ranging Equipment

National Stock Number

1240-01-078-8279

Item Name Code

22585

Assigment Date

06/20/1979 (47 years ago)

A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see cell, optical element. Excludes:ring, externally threaded.

4.812-32 thread size, 2a thread class, +4.7555 to 4.7902 inches thread pitch diameters, right-hand thread direction, 4.812 inches thread length

Product Characteristics

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

Thread Class: 2a
Thread Pitch Diameters: +4.7555 to 4.7902 inches
Thread Direction: right-hand
Thread Length: 4.812 inches
Thread Size: 4.812-32
Screw Thread Series Designator: uns
Thread Location: internal
Internal Flange Thickness: 0.190 inches minimum and 0.210 inches maximum
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
12266763	Optical Element Retaining Ring

FAQs

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

What is the FSCG of the NSN 1240-01-078-8279?

The FSCG of the NSN 1240-01-078-8279 is 1240

Does the NSN 1240-01-078-8279 have a Schedule B code assigned?

Yes, the Schedule B code is 9803200000

Does NSN 1240-01-078-8279 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 1240-01-078-8279 contain precious materials?

Item does not contain precious metal.

Does NSN 1240-01-078-8279 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 1240-01-078-8279 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Wed, Jun 20, 1979