1240-00-864-6542

Find complete technical information, availability, and procurement data for: 1240-00-864-6542
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Federal Supply Group

Fire Control Equipment

Federal Supply Classification

1240 Optical Sighting and Ranging Equipment

National Stock Number

1240-00-864-6542

Item Name Code

22451

Assigment Date

01/01/1962 (64 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.

0.180 inches nominal overall length, 2 hole or slot quantity, 0.660 inches minimum and 0.670 inches maximum hole diameter, 0.800 in.-48 ns-2 thread size, 0.060 inches nominal width

Product Characteristics

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

Hole Diameter: 0.660 inches minimum and 0.670 inches maximum
Width: 0.060 inches nominal
Overall Length: 0.180 inches nominal
Hole Or Slot Quantity: 2
Thread Size: 0.800 in.-48 ns-2
Depth: 0.040 inches nominal
End Item Identification: 1240-00-106-7754
Drive Type: slotted
Drive Facility Angular Spacing In Deg: 180.0
Internal Annular Serration: not provided
Setscrew Notch: not provided
Material: aluminum alloy 2024
Material Document And Classification: ww-t-785, t3, type 1-canceled fed spec single material response
Surface Treatment: anodize

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
7660507	Optical Element Retainer

FAQs

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

What is the FSCG of the NSN 1240-00-864-6542?

The FSCG of the NSN 1240-00-864-6542 is 1240

Does the NSN 1240-00-864-6542 have a Schedule B code assigned?

Yes, the Schedule B code is 9803200000

Does NSN 1240-00-864-6542 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 1240-00-864-6542 contain precious materials?

Item does not contain precious metal.

Does NSN 1240-00-864-6542 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 1240-00-864-6542 was assigned to the Federal Catalog?

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