5331-00-903-5561

Find complete technical information, availability, and procurement data for: 5331-00-903-5561
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5331 O-Ring

National Stock Number

5331-00-903-5561

Item Name Code

47946

Assigment Date

01/01/1960 (66 years ago)

rubber butadiene-acrylonitrile class nbr material, 2.879 inches nominal outside diameter, 0.067 inches minimum and 0.073 inches maximum cross-sectional height, 2.724 inches minimum and 2.754 inches maximum center hole diameter, 70.0 shore durometer a nominal hardness rating

Product Characteristics

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

Outside Diameter: 2.879 inches nominal
Cross-Sectional Height: 0.067 inches minimum and 0.073 inches maximum
Center Hole Diameter: 2.724 inches minimum and 2.754 inches maximum
Hardness Rating: 70.0 shore durometer a nominal
Material: rubber butadiene-acrylonitrile class nbr

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5330-00-641-5789	Preformed Packing	07/01/2025

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
AS3551-039	O-Ring
MS9241-039	O-Ring

FAQs

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

What is the FSCG of the NSN 5331-00-903-5561?

The FSCG of the NSN 5331-00-903-5561 is 5331

Does the NSN 5331-00-903-5561 have a Schedule B code assigned?

Yes, the Schedule B code is 4016930000

Does NSN 5331-00-903-5561 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 5331-00-903-5561 contain precious materials?

Item does not contain precious metal.

Does NSN 5331-00-903-5561 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 5331-00-903-5561 was assigned to the Federal Catalog?

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