NSN 2810-01-678-0031 · NIIN 016780031 · Part number 721X4MT-987-P17
Greene Tweed & Co Inc · FSC 2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components · FSG 28 — Engines, Turbines, and Components · CAGE 5F573
Government record, cited
NSN 2810-01-678-0031 — this item is cataloged by the U.S. Government under National Stock Number 2810-01-678-0031. Manufacturer of record part number: 721X4MT-987-P17.
Also searched as2810-01-678-0031 ·
2810016780031 ·
NIIN 016780031 ·
01-678-0031 ·
FSC 2810 Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components · CAGE 5F573 · 721X4MT-987-P17 · 721X4MT-987-P17/12/ASY
FSC: 2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: 721X4MT-987-P17
Manufacturer: Greene Tweed & Co Inc
General Description
The Ring,piston, cataloged under National Stock Number 2810-01-678-0031, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Greene Tweed & Co Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Ring,piston
FSC / FSG
2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components (FSG 28)
Manufacturers
Greene Tweed & Co Inc (CAGE 5F573)
Technical Specifications
Parameter
Value
NSN
2810-01-678-0031
Primary Part Number
721X4MT-987-P17
Item Name
Ring,piston
FSC / FSG
2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
Other items in FSC 2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2810-00-001-3863
2810-00-001-3863 · Item name not on file
2810-00-001-9036
SUPPORT,INDICATOR
2810-00-001-9113
2810-00-001-9113 · Item name not on file
2810-00-001-9116
2810-00-001-9116 · Item name not on file
2810-00-001-9117
2810-00-001-9117 · Item name not on file
2810-00-001-9592
2810-00-001-9592 · Item name not on file
2810-00-003-5864
2810-00-003-5864 · Item name not on file
2810-00-004-0436
POPPET,VALVE
Frequently Asked Questions
What is NSN 2810-01-678-0031?
NSN 2810-01-678-0031 is a Ring,piston, manufactured by Greene Tweed & Co Inc, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
What part numbers are listed for NSN 2810-01-678-0031?
NSN 2810-01-678-0031 has 1 manufacturer part number on file: 721X4MT-987-P17 (Greene Tweed & Co Inc).
Is NSN 2810-01-678-0031 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 2810-01-678-0031?
NSN 2810-01-678-0031 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.