PartsTable TECHNICAL DATA SHEET
NSN 3010-01-643-8622Government record, cited

Coupling, Shaft, Flexible3010-01-643-8622

NSN 3010-01-643-8622 · NIIN 016438622 · Part number M300M4012
Magnaloy Coupling Co Div of Douville-Johnston Corp · FSC 3010 — Torque Converters and Speed Changers · FSG 30 — Mechanical Power Transmission Equipment · CAGE 14204
Government record, cited
NSN 3010-01-643-8622 — this item is cataloged by the U.S. Government under National Stock Number 3010-01-643-8622. Manufacturer of record part number: M300M4012.
Also searched as  3010-01-643-8622 · 3010016438622 · NIIN 016438622 · 01-643-8622 · FSC 3010 Torque Converters and Speed Changers · CAGE 14204 · M300M4012
Nearby stock numbers  ·
Features
  • Coupling,shaft,flexible — FSC 3010
  • Design Type: INSERT
  • Outside Diameter: 3.450 INCHES NOMINAL IN
  • Features Provided: KEYWAY
  • Bore Shape: STRAIGHT THROUGH BORE
  • Bore Diameter: 40.0 MILLIMETERS NOMINAL THROUGH BORE MM
  • 1 manufacturer part number on file
  • Manufacturer of record: Magnaloy Coupling Co Div of Douville-Johnston Corp
Identification
  • NSN: 3010-01-643-8622
  • NIIN: 016438622
  • FSC: 3010 — Torque Converters and Speed Changers
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: M300M4012
  • Manufacturer: Magnaloy Coupling Co Div of Douville-Johnston Corp
General Description

The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-643-8622, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Magnaloy Coupling Co Div of Douville-Johnston Corp. Government technical data includes 5 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
NSN3010-01-643-8622
Primary Part NumberM300M4012
Item NameCoupling,shaft,flexible
FSC / FSG3010 / 30 — Torque Converters and Speed Changers
ManufacturerMagnaloy Coupling Co Div of Douville-Johnston Corp
StatusACTIVE
Design TypeINSERT
Outside Diameter3.450 INCHES NOMINAL IN
Features ProvidedKEYWAY
Bore ShapeSTRAIGHT THROUGH BORE
Bore Diameter40.0 MILLIMETERS NOMINAL THROUGH BORE MM
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
M300M4012 PRIMARY Magnaloy Coupling Co Div of Douville-Johnston Corp (USA)
No interchangeability data on file.
Other items in FSC 3010 — Torque Converters and Speed Changers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3010-00-010-0577
3010-00-010-0577 · Item name not on file
3010-00-267-4959
GRIDMEMBER,COUPLING
3010-00-267-4959
GRIDMEMBER,COUPLING
3010-00-267-4959
GRIDMEMBER,COUPLING
3010-00-356-3346
CLUTCH ASSEMBLY,FRICTION
3010-00-395-0188
CLUTCH,DRUM
3010-00-395-0188
CLUTCH,DRUM
3010-00-395-0188
CLUTCH,DRUM

Frequently Asked Questions

What is NSN 3010-01-643-8622?

NSN 3010-01-643-8622 is a Coupling,shaft,flexible, manufactured by Magnaloy Coupling Co Div of Douville-Johnston Corp, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.

What part numbers are listed for NSN 3010-01-643-8622?

NSN 3010-01-643-8622 has 1 manufacturer part number on file: M300M4012 (Magnaloy Coupling Co Div of Douville-Johnston Corp).

What are the specifications of M300M4012?

Key specifications for M300M4012: Design Type: INSERT; Overall Length: 3.580 INCHES NOMINAL IN; Outside Diameter: 3.450 INCHES NOMINAL IN; Features Provided: KEYWAY. 5 specifications are documented in the U.S. Government catalog.

Is NSN 3010-01-643-8622 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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