86021A

View detailed technical data, stock status, and sourcing information for: 86021A
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-273-0580

Item Name Code

11459

Assigment Date

01/01/1963 (63 years ago)

A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes:packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.

5.500 inches standard bore diameter, 0.1230 inches minimum and 0.1240 inches maximum overall width, concentric ring style, plain rectangular, straight face cross-sectional shape style, 0.2000 inches minimum and 0.2100 inches maximum radial wall thickness

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: plain rectangular, straight face
Ring Style: concentric
Radial Wall Thickness: 0.2000 inches minimum and 0.2100 inches maximum
Overall Width: 0.1230 inches minimum and 0.1240 inches maximum
Standard Bore Diameter: 5.500 inches
Joint Style: vertical joint
Material: iron overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2815-00-097-2525	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
32139B	Piston Ring
86021A	Piston Ring
NP11053PC5116	Piston Ring
NP11059PC5116	Piston Ring
NP11060PC5116	Piston Ring
NP11116PC4	Piston Ring
NP11117PC2	Piston Ring
P211835	Piston Ring

FAQs

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

What is the FSCG of the NSN 2815-00-273-0580?

The FSCG of the NSN 2815-00-273-0580 is 2815

Does the NSN 2815-00-273-0580 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-273-0580 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 2815-00-273-0580 contain precious materials?

Precious metal content is unknown

Does NSN 2815-00-273-0580 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 2815-00-273-0580 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963