81001

View detailed technical data, stock status, and sourcing information for: 81001
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-361-2721

Item Name Code

16756

Assigment Date

01/01/1961 (65 years ago)

4.629 inches minimum and 4.630 inches maximum body outside diameter, 90.0 nominal rockwell b and 95.0 nominal rockwell b metallic hardness rating, 11.625 inches nominal overall length, 4.373 inches minimum and 4.374 inches maximum bore diameter, 0.248 inches minimum and 0.250 inches maximum flange thickness

Product Characteristics

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

Overall Length: 11.625 inches nominal
Flange Thickness: 0.248 inches minimum and 0.250 inches maximum
Bore Diameter: 4.373 inches minimum and 4.374 inches maximum
Body Outside Diameter: 4.629 inches minimum and 4.630 inches maximum
Metallic Hardness Rating: 90.0 nominal rockwell b and 95.0 nominal rockwell b
Flange Outside Diameter: 4.687 inches minimum and 4.690 inches maximum
Design Type: dry
Valve Recess: included
Top Inside Chamfer: not included
Bottom Inside Chamfer: not included
Top Intake Port: not included
Intake Hole: not included
Material: iron cast
Material Document And Classification: astm,a48-48 assn std single material response
Style Designator: dry, flanged, relieved
Fsc Application Data: cylinder block group,diesel engine

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2815-00-601-3949	No Name Available	01/01/1963

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
80004C	Cylinder Sleeve
81001	Cylinder Sleeve
81001-C	Cylinder Sleeve
81003C	Cylinder Sleeve

FAQs

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

What is the FSCG of the NSN 2815-00-361-2721?

The FSCG of the NSN 2815-00-361-2721 is 2815

Does the NSN 2815-00-361-2721 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-361-2721 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 2815-00-361-2721 contain precious materials?

Precious metal content is unknown

Does NSN 2815-00-361-2721 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 2815-00-361-2721 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961