1240-01-268-4712

Find complete technical information, availability, and procurement data for: 1240-01-268-4712
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Federal Supply Group

Fire Control Equipment

Federal Supply Classification

1240 Optical Sighting and Ranging Equipment

National Stock Number

1240-01-268-4712

Item Name Code

21859

Assigment Date

12/01/1987 (38 years ago)

A cylindrical item specifically designed to hold a lens, reticle, or window in an optical system. Includes eccentric cells and/or rings designed to be rotated within the instrument to shift an optical element to a prescribed position.

right-hand thread direction, +0.7505 to 0.7812 inches and +0.6540 to 0.6875 inches thread pitch diameters, 0.140 inches and 0.210 inches thread length, 1.160 inches nominal overall length, 3a and 3b thread class

Product Characteristics

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

Thread Class: 3a and 3b
Thread Pitch Diameters: +0.7505 to 0.7812 inches and +0.6540 to 0.6875 inches
Thread Direction: right-hand
Thread Length: 0.140 inches and 0.210 inches
Overall Length: 1.160 inches nominal
Thread Size: 0.781-32 and 0.688-32
Overall Diameter: 0.812 inches nominal
Screw Thread Series Designator: un
Thread Location: external and internal
Eccentric Construction: not provided
Chamfer Location: threaded end
Material: copper 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
3183232	Optical Element Cell

FAQs

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

What is the FSCG of the NSN 1240-01-268-4712?

The FSCG of the NSN 1240-01-268-4712 is 1240

Does the NSN 1240-01-268-4712 have a Schedule B code assigned?

Yes, the Schedule B code is 9803200000

Does NSN 1240-01-268-4712 require demilitarization?

Usml or ccl military items - demil required. Destroy item and components to prevent restoration or repair to a usable condition. (note 5).

Does NSN 1240-01-268-4712 contain precious materials?

Item does not contain precious metal.

Does NSN 1240-01-268-4712 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 1240-01-268-4712 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Tue, Dec 1, 1987

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Pricing

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