1240-00-409-0851

Find complete technical information, availability, and procurement data for: 1240-00-409-0851
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Federal Supply Group

Fire Control Equipment

Federal Supply Classification

1240 Optical Sighting and Ranging Equipment

National Stock Number

1240-00-409-0851

Item Name Code

77777

Assigment Date

07/15/1970 (56 years ago)

A tubular shaped item designed to maintain a predetermined distance between optical elements, such as lenses, reticles, and the like. The bore may be straight, tapered or counterbored, and may have annular serrations to converge or diverge light rays. The surfaces, which mate with the optics, are usually chamfered, concave, and/or have a specified finish designation in the range of 1 to 125 microinches arithmetical average (aa). See also spacer, sleeve and cell, optical element.

tubing aluminum alloy 2024-t3 spec ww-t-700/3;finish no. 7.3,class iii of mil-std-171; 0.875 in.o.d; 0.770 in. i.d. with 0.057 in.dia. slot across diameter; 0.094 in.h. general characteristics item description, used on m44a1e1 end item identification

Product Characteristics

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

End Item Identification: used on m44a1e1
General Characteristics Item Description: tubing aluminum alloy 2024-t3 spec ww-t-700/3;finish no. 7.3,class iii of mil-std-171; 0.875 in.o.d; 0.770 in. i.d. with 0.057 in.dia. slot across diameter; 0.094 in.h.

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
10513289	Retainer Periscope

FAQs

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

What is the FSCG of the NSN 1240-00-409-0851?

The FSCG of the NSN 1240-00-409-0851 is 1240

Does the NSN 1240-00-409-0851 have a Schedule B code assigned?

Yes, the Schedule B code is 9803200000

Does NSN 1240-00-409-0851 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 1240-00-409-0851 contain precious materials?

Item does not contain precious metal.

Does NSN 1240-00-409-0851 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 1240-00-409-0851 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Jul 15, 1970