PartsTable TECHNICAL DATA SHEET
NSN 2825-01-168-2037Government record, cited

Cover, Reduction Gear2825-01-168-2037

NSN 2825-01-168-2037 · NIIN 011682037 · Part number KD549DEX1
Siemens Energy, Inc. · FSC 2825 — Steam Turbines and Components · FSG 28 — Engines, Turbines, and Components · CAGE 16712
Government record, cited
NSN 2825-01-168-2037 — this item is cataloged by the U.S. Government under National Stock Number 2825-01-168-2037. Manufacturer of record part number: KD549DEX1.
Also searched as  2825-01-168-2037 · 2825011682037 · NIIN 011682037 · 01-168-2037 · FSC 2825 Steam Turbines and Components · CAGE 16712 · KD549DEX1 · F7805 PIECE 46 · F7805
Nearby stock numbers  ·
Features
  • Cover,reduction Gear — FSC 2825
  • General Characteristics Item Description: STEEL
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Siemens Energy, Inc.
Identification
  • NSN: 2825-01-168-2037
  • NIIN: 011682037
  • FSC: 2825 — Steam Turbines and Components
  • FSG: 28 — Engines, Turbines, and Components
  • Primary part number: KD549DEX1
  • Manufacturer: Siemens Energy, Inc.
General Description

The Cover,reduction Gear, cataloged under National Stock Number 2825-01-168-2037, is classified within Federal Supply Class 2825 (Steam Turbines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2825-01-168-2037
Primary Part NumberKD549DEX1
Item NameCover,reduction Gear
FSC / FSG2825 / 28 — Steam Turbines and Components
ManufacturerSiemens Energy, Inc.
StatusACTIVE
General Characteristics Item DescriptionSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2825-01-168-2038KD549DC POSSIBLE MATCH
COVER,REDUCTION GEAR
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-2039KD449Z POSSIBLE MATCH
GUARD,REDUCTION GEAR
Possible match (shared part number)Siemens Energy, Inc.
2910-01-168-9491KD345BH POSSIBLE MATCH
NOZZLE,REDUCTION GE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-168-9492KD305LX2 POSSIBLE MATCH
CAP,REDUCTION GEAR
Possible match (shared part number)Siemens Energy, Inc.
2910-01-168-9493KD345BG POSSIBLE MATCH
NOZZLE,REDUCTION GE
Possible match (shared part number)Siemens Energy, Inc.
2910-01-168-9494KD345BK POSSIBLE MATCH
NOZZLE,REDUCTION GE
Possible match (shared part number)Siemens Energy, Inc.
3010-01-169-7415F7805 PIECE 31,35 POSSIBLE MATCH
COUPLING,SHAFT,RIGID
Possible match (shared part number)Siemens Energy, Inc.
2910-01-170-0741KD-345BF POSSIBLE MATCH
NOZZLE,GEAR ASSEMBL
Possible match (shared part number)Siemens Energy, Inc.
2825-01-170-0813KD-305LX1 POSSIBLE MATCH
CAP,REDUCTION GEAR,STEAM TURBINE
Possible match (shared part number)Siemens Energy, Inc.
2825-01-170-6881KD301CA POSSIBLE MATCH
COVER,REDUCTION GEA
Possible match (shared part number)Siemens Energy, Inc.
Cross-Reference Index
Part NumberManufacturer
KD549DEX1 PRIMARY Siemens Energy, Inc. (USA)
F7805 PIECE 46 Siemens Energy, Inc. (USA)
Reference documents
ReferenceMeaning
F7805 D/9 Drawing number reference only
Siemens Energy, Inc.
Related Parts
2825-01-168-2038POSSIBLE MATCH
COVER,REDUCTION GEAR
KD549DC
2825-01-168-2039POSSIBLE MATCH
GUARD,REDUCTION GEAR
KD449Z
2910-01-168-9491POSSIBLE MATCH
NOZZLE,REDUCTION GE
KD345BH
2825-01-168-9492POSSIBLE MATCH
CAP,REDUCTION GEAR
KD305LX2
2910-01-168-9493POSSIBLE MATCH
NOZZLE,REDUCTION GE
KD345BG
2910-01-168-9494POSSIBLE MATCH
NOZZLE,REDUCTION GE
KD345BK
3010-01-169-7415POSSIBLE MATCH
COUPLING,SHAFT,RIGID
F7805 PIECE 31,35
2910-01-170-0741POSSIBLE MATCH
NOZZLE,GEAR ASSEMBL
KD-345BF
2825-01-170-0813POSSIBLE MATCH
CAP,REDUCTION GEAR,STEAM TURBINE
KD-305LX1
2825-01-170-6881POSSIBLE MATCH
COVER,REDUCTION GEA
KD301CA
2825-01-170-6882POSSIBLE MATCH
GUARD,REDUCTION GEA
KD-449ZX1
2825-01-170-6883POSSIBLE MATCH
HOUSING,REDUCTION G
RGR-317-A1

Frequently Asked Questions

What is NSN 2825-01-168-2037?

NSN 2825-01-168-2037 is a Cover,reduction Gear, manufactured by Siemens Energy, Inc., classified under FSC 2825, Steam Turbines and Components. Status: active.

What part numbers are listed for NSN 2825-01-168-2037?

NSN 2825-01-168-2037 has 2 manufacturer part numbers on file: KD549DEX1 (Siemens Energy, Inc.), F7805 PIECE 46 (Siemens Energy, Inc.).

What NSN replaces 2825-01-168-2037?

12 possible matches (shared part number, not a government interchangeability claim): 2825-01-168-2038, 2825-01-168-2039, 2910-01-168-9491. Verify interchangeability with system specifications before substitution.

What are the specifications of KD549DEX1?

Key specifications for KD549DEX1: General Characteristics Item Description: STEEL. 1 specification is documented in the U.S. Government catalog.

Is NSN 2825-01-168-2037 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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