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NSN 3040-00-398-6942Government record, cited

Plate, Retaining, Shaft3040-00-398-6942

NSN 3040-00-398-6942 · NIIN 003986942 · Part number H549D2X1
Siemens Energy, Inc. · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 16712
Government record, cited
NSN 3040-00-398-6942 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-398-6942. Manufacturer of record part number: H549D2X1.
Also searched as  3040-00-398-6942 · 3040003986942 · NIIN 003986942 · 00-398-6942 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 16712 · H549D2X1
Nearby stock numbers  ·
Features
  • Plate,retaining,shaft — FSC 3040
  • Mounting Hole Quantity: 5
  • Mounting Hole Diameter: 0.375 INCHES NOMINAL IN
  • Shape: ROUND
  • Outside Diameter: 4.030 INCHES NOMINAL IN
  • Aperture Diameter: 0.735 INCHES NOMINAL IN
  • Material: STEEL
  • Thickness: 0.400 INCHES NOMINAL IN
Identification
  • NSN: 3040-00-398-6942
  • NIIN: 003986942
  • FSC: 3040 — Miscellaneous Power Transmission Equipment
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: H549D2X1
  • Manufacturer: Siemens Energy, Inc.
General Description

The Plate,retaining,shaft, cataloged under National Stock Number 3040-00-398-6942, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 7 specifications, 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-398-6942
Primary Part NumberH549D2X1
Item NamePlate,retaining,shaft
FSC / FSG3040 / 30 — Miscellaneous Power Transmission Equipment
ManufacturerSiemens Energy, Inc.
StatusACTIVE
Mounting Hole Quantity5
Mounting Hole Diameter0.375 INCHES NOMINAL IN
ShapeROUND
Outside Diameter4.030 INCHES NOMINAL IN
Aperture Diameter0.735 INCHES NOMINAL IN
MaterialSTEEL
Thickness0.400 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
H549D2X1 PRIMARY Siemens Energy, Inc. (USA)
No interchangeability data on file.
Other items in FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046
3040-00-001-0046 · Item name not on file
3040-00-001-0047
3040-00-001-0047 · Item name not on file
3040-00-001-0048
3040-00-001-0048 · Item name not on file
3040-00-001-0068
3040-00-001-0068 · Item name not on file
3040-00-001-0077
3040-00-001-0077 · Item name not on file
3040-00-001-0078
3040-00-001-0078 · Item name not on file
3040-00-001-0089
3040-00-001-0089 · Item name not on file
3040-00-001-1224
3040-00-001-1224 · Item name not on file

Frequently Asked Questions

What is NSN 3040-00-398-6942?

NSN 3040-00-398-6942 is a Plate,retaining,shaft, manufactured by Siemens Energy, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What part numbers are listed for NSN 3040-00-398-6942?

NSN 3040-00-398-6942 has 1 manufacturer part number on file: H549D2X1 (Siemens Energy, Inc.).

What are the specifications of H549D2X1?

Key specifications for H549D2X1: Mounting Hole Quantity: 5; Mounting Hole Diameter: 0.375 INCHES NOMINAL IN; Shape: ROUND; Outside Diameter: 4.030 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 3040-00-398-6942 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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