PT840

View detailed technical data, stock status, and sourcing information for: PT840
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2805 Except Aircraft; and Components Gasoline Reciprocating Engines

National Stock Number

2805-00-300-0421

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.

2805-00-300-0421, piston ring

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
19-8-764	Piston Ring
85811	Piston Ring
PT840	Piston Ring

FAQs

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

What is the FSCG of the NSN 2805-00-300-0421?

The FSCG of the NSN 2805-00-300-0421 is 2805

Does the NSN 2805-00-300-0421 have a Schedule B code assigned?

Yes, the Schedule B code is 8409918000

Does NSN 2805-00-300-0421 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 2805-00-300-0421 contain precious materials?

Item does not contain precious metal.

Does NSN 2805-00-300-0421 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 2805-00-300-0421 was assigned to the Federal Catalog?

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