PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D15-664NPC649Piston,regulating V

Northrop Grumman Systems Corporation Div Marine Systems · NSN 2825-00-218-6049 · FSC 2825 · No Item Name Available
Verified by PartsTable
NSN 2825-00-218-6049 — this item is cataloged by the U.S. Government under National Stock Number 2825-00-218-6049. Primary manufacturer part number: D15-664NPC649.
Features
  • Piston,regulating V — FSC 2825
  • 34 verified cross-references
  • Primary manufacturer: Northrop Grumman Systems Corporation Div Marine Systems
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston,regulating V, cataloged under National Stock Number 2825-00-218-6049, is classified within Federal Supply Class 2825 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Northrop Grumman Systems Corporation Div Marine Systems. This item has 34 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePiston,regulating V
FSC / FSG2825 — No Item Name Available (FSG 28)
ManufacturersWestinghouse Electric Corp (CAGE 79500); Westinghouse Electric Corp Sturtevant Div (CAGE 80231); Northrop Grumman Systems Corporation Div Marine Systems (CAGE 90099); Westinghouse Electric Corp Control Business Unit (CAGE 11660)
Technical Specifications
ParameterValue
NSN2825-00-218-6049
Primary Part NumberD15-664NPC649
Item NamePiston,regulating V
FSC / FSG2825 / 28 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Div Marine Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5940-00-177-2517521478776 INTERCHANGEABLE
Terminal,quick Disconnect
Telemechanics Inc
5950-00-489-1769399266-6 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon Co
5310-00-602-88543521-6 INTERCHANGEABLE
Nut
Gc/waldom Inc
6615-00-919-8085072-08806 INTERCHANGEABLE
Armature and Ring
Moog Inc
6660-00-920-32588806 INTERCHANGEABLE
Rotor,wind Speed
Belfort Instrument Company
5950-00-933-0425 INTERCHANGEABLE
Transformer,audio Frequency
6730-01-005-03068866 INTERCHANGEABLE
Projector,still Picture
Bosch Security Systems, Llc
5950-01-051-8275 INTERCHANGEABLE
Transformer,discriminator
5306-01-092-009819AS608 INTERCHANGEABLE
Bolt
Oshkosh Defense Llc
5330-01-263-88408806 INTERCHANGEABLE
Packing,preformed
King Engineering Corporation Dba King-Gage Systems
Cross-Reference Index
Part NumberManufacturer
D15-664NPC649 Westinghouse Electric Corp (USA)
D15-746APC649 Westinghouse Electric Corp Sturtevant Div (USA)
8806 Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-664APC649 Westinghouse Electric Corp (USA)
D15-746MPC649 Westinghouse Electric Corp (USA)
D15-664NPC649 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-664APC649 Westinghouse Electric Corp Sturtevant Div (USA)
D15-746HPC649 Westinghouse Electric Corp Sturtevant Div (USA)
D15-746APC649 Westinghouse Electric Corp (USA)
D15-746LPC649 Westinghouse Electric Corp Sturtevant Div (USA)
D15-746APC649 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-664LPC649 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
8806 Westinghouse Electric Corp Sturtevant Div (USA)
D15-664MPC649 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-664NPC649 Westinghouse Electric Corp Sturtevant Div (USA)
D15-664LPC649 Westinghouse Electric Corp (USA)
D15-664HPC649 Westinghouse Electric Corp Sturtevant Div (USA)
D15-664HPC649 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-664-0PC649 Westinghouse Electric Corp (USA)
D15-664APC649 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
Related Parts
5940-00-177-2517INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
521478776
5950-00-489-1769INTERCHANGEABLE
COIL,RADIO FREQUENCY
399266-6
5310-00-602-8854INTERCHANGEABLE
NUT
3521-6
6615-00-919-8085INTERCHANGEABLE
ARMATURE AND RING
072-08806
6660-00-920-3258INTERCHANGEABLE
ROTOR,WIND SPEED
8806
5950-00-933-0425INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
6730-01-005-0306INTERCHANGEABLE
PROJECTOR,STILL PICTURE
8866
5950-01-051-8275INTERCHANGEABLE
TRANSFORMER,DISCRIMINATOR
5306-01-092-0098INTERCHANGEABLE
BOLT
19AS608
5330-01-263-8840INTERCHANGEABLE
PACKING,PREFORMED
8806
6640-01-565-5749INTERCHANGEABLE
ROTOR,CENTRIFUGE

Frequently Asked Questions

What is NSN 2825-00-218-6049?

NSN 2825-00-218-6049 is a Piston,regulating V, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 2825 (No Item Name Available). Status: active.

What are the part numbers for NSN 2825-00-218-6049?

NSN 2825-00-218-6049 has 34 cross-referenced part numbers: D15-664NPC649 (Westinghouse Electric Corp), D15-746APC649 (Westinghouse Electric Corp Sturtevant Div), 8806 (Northrop Grumman Systems Corporation Div Marine Systems), D15-664APC649 (Westinghouse Electric Corp), D15-746MPC649 (Westinghouse Electric Corp) and 29 more.

What NSN replaces 2825-00-218-6049?

There are 11 known substitutes for 2825-00-218-6049: 5940-00-177-2517, 5950-00-489-1769, 5310-00-602-8854 and 8 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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