7840

View detailed technical data, stock status, and sourcing information for: 7840
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-901-5056

Item Name Code

04521

Assigment Date

01/01/1960 (66 years ago)

A one-piece metal item, usually tubular, flanged at one end, the other end open. It is used primarily for lining and reinforcing the edges of holes. The unflanged end is designed to be inserted through a hole and crimped to form a mating flange. Excludes:grommet, metallic and eyelets which are components of pushbutton, turnbutton and turnlock type fastners.

0.146 inches minimum and 0.166 inches maximum cross-sectional height, 65.0 shore durometer a minimum and 75.0 shore durometer a maximum overall hardness rating, 0.849 inches minimum and 0.869 inches maximum peripheral diameter, 0.443 inches minimum and 0.463 inches maximum center hole diameter, u cross-sectional shape style

Product Characteristics

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

Cross-Sectional Shape Style: u
Cross-Sectional Height: 0.146 inches minimum and 0.166 inches maximum
Center Hole Diameter: 0.443 inches minimum and 0.463 inches maximum
Peripheral Diameter: 0.849 inches minimum and 0.869 inches maximum
Hardness Rating: 65.0 shore durometer a minimum and 75.0 shore durometer a maximum overall
Material: rubber synthetic overall

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
7840	Preformed Packing

FAQs

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

What is the FSCG of the NSN 5330-00-901-5056?

The FSCG of the NSN 5330-00-901-5056 is 5330

Does the NSN 5330-00-901-5056 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5330-00-901-5056 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 5330-00-901-5056 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-901-5056 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5330-00-901-5056 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960