NSN 5342-01-491-2877 · NIIN 014912877 · Part number 566-6985426-8
Naval Sea Systems Command · FSC 5342 — Hardware, Weapon System · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5342-01-491-2877 — this item is cataloged by the U.S. Government under National Stock Number 5342-01-491-2877. Manufacturer of record part number: 566-6985426-8.
Also searched as5342-01-491-2877 ·
5342014912877 ·
NIIN 014912877 ·
01-491-2877 ·
FSC 5342 Hardware, Weapon System · CAGE 53711 · 566-6985426-8 · H621-0102-8 · 566-6985426
The Piston,dashpot, cataloged under National Stock Number 5342-01-491-2877, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5342-01-491-2877
Primary Part Number
566-6985426-8
Item Name
Piston,dashpot
FSC / FSG
5342 / 53 — Hardware, Weapon System
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Material
STEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-491-9278H621-0102-41POSSIBLE MATCH
VALVE,VENT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3120-01-492-418627RD00998112-016POSSIBLE MATCH
BUSHING,SLEEVE
Possible match (shared part number)Greene Tweed & Co Inc
3040-01-492-5513566-6985426-75POSSIBLE MATCH
RING,ROD,PISTON
Possible match (shared part number)Naval Sea Systems Command
5306-01-654-8009H621-0102-20POSSIBLE MATCH
BOLT,MACHINE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-671-4938566-6985426 PC 12 BLANKPOSSIBLE MATCH
PLATE,MOUNTING
Possible match (shared part number)Naval Sea Systems Command
5310-01-673-7434566-6985426-11POSSIBLE MATCH
NUT,PLAIN,EXTENDED WASHER,HEXAGO
Possible match (shared part number)Naval Sea Systems Command
NSN 5342-01-491-2877 is a Piston,dashpot, manufactured by Naval Sea Systems Command, classified under FSC 5342, Hardware, Weapon System. Status: active.
What part numbers are listed for NSN 5342-01-491-2877?
NSN 5342-01-491-2877 has 1 manufacturer part number on file: 566-6985426-8 (Naval Sea Systems Command).
What NSN replaces 5342-01-491-2877?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-491-9278, 3120-01-492-4186, 3040-01-492-5513. Verify interchangeability with system specifications before substitution.
What are the specifications of 566-6985426-8?
Key specifications for 566-6985426-8: Material: STEEL CORROSION RESISTING. 1 specification is documented in the U.S. Government catalog.
Is NSN 5342-01-491-2877 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.