Ring, Piston 2805-01-302-1739 NSN 2805-01-302-1739 · NIIN 013021739 · Part number M1904DU
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · FSC 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components · FSG 28 — Engines, Turbines, and Components · CAGE 61208
NSN 2805-01-302-1739 — this item is cataloged by the U.S. Government under National Stock Number 2805-01-302-1739. Manufacturer of record part number: M1904DU .
Also searched as
2805-01-302-1739 ·
2805013021739 ·
NIIN 013021739 ·
01-302-1739 ·
FSC 2805 Gasoline Reciprocating Engines, Except Aircraft; and Components · CAGE 61208 · M1904DU
Nearby stock numbers
← 2805-01-301-9979 Manifold, Intake
·
2805-01-302-2958 Valve, Poppet, Engine →
Features
Ring,piston — FSC 2805 2 manufacturer part numbers on file Manufacturer of record: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Identification
NSN: 2805-01-302-1739
NIIN: 013021739
FSC: 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: M1904DU
Manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
General Description
The Ring,piston, cataloged under National Stock Number 2805-01-302-1739, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name Ring,piston FSC / FSG 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components (FSG 28) Manufacturers Marine & Industrial Transmissions Ltd (CAGE U2621); Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208)
Technical Specifications
Parameter Value NSN 2805-01-302-1739 Primary Part Number M1904DU Item Name Ring,piston FSC / FSG 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components Manufacturer Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic Status ACTIVE
Lifecycle & Compliance
Acquisition Status ACTIVE DEMIL Code DEMIL A — No Demilitarization Required Hazard No hazard code in the DLA record (HMIC N)
Cross-Reference Index
Part Number Manufacturer
M1904DU Marine & Industrial Transmissions Ltd (GBR)
M1904DU PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
No interchangeability data on file.
Other items in FSC 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2805-00-000-4022
2805-00-000-4022 · Item name not on file
2805-00-001-0029
2805-00-001-0029 · Item name not on file
2805-00-001-3527
2805-00-001-3527 · Item name not on file
2805-00-001-3844
2805-00-001-3844 · Item name not on file
2805-00-001-3854
COVER,FLYWHEEL
2805-00-001-6154
2805-00-001-6154 · Item name not on file
2805-00-001-6164
FLYWHEEL,ENGINE
2805-00-001-6575
RING SET,PISTON
Frequently Asked Questions
What is NSN 2805-01-302-1739?
NSN 2805-01-302-1739 is a Ring,piston, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
What part numbers are listed for NSN 2805-01-302-1739?
NSN 2805-01-302-1739 has 2 manufacturer part numbers on file: M1904DU (Marine & Industrial Transmissions Ltd), M1904DU (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
Is NSN 2805-01-302-1739 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.
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.
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