9N578

View detailed technical data, stock status, and sourcing information for: 9N578
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-01-023-7320

Item Name Code

11459

Assigment Date

06/24/1976 (50 years ago)

A circular, single or multipiece, rigid, metallic or nonmetallic item having a centrally located hole with a sharp edge on the inside periphery. It is supplied in various cross-sectional shapes and is designed to be installed in a cylinder, shock strut, or similar device to remove excess oil, dirt, ice, and/or foreign material from a piston, ram, or sliding rod. Excludes:packing, preformed; ring, piston; and seal ring, metal.

inside bevel, upper, straight face cross-sectional shape style, 0.1562 inches nominal radial wall thickness, concentric ring style, 0.0938 inches nominal overall width, 4.500 inches standard bore diameter

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: inside bevel, upper, straight face
Ring Style: concentric
Radial Wall Thickness: 0.1562 inches nominal
Overall Width: 0.0938 inches nominal
Standard Bore Diameter: 4.500 inches
Bore Diameter Oversize: 0.040 inches
Joint Style: vertical joint
Material: steel 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
9N578	Piston Ring
IPD9N0578	Piston Ring

FAQs

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

What is the FSCG of the NSN 2815-01-023-7320?

The FSCG of the NSN 2815-01-023-7320 is 2815

Does the NSN 2815-01-023-7320 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-01-023-7320 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 2815-01-023-7320 contain precious materials?

Precious metal content is unknown

Does NSN 2815-01-023-7320 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 2815-01-023-7320 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Thu, Jun 24, 1976