The Coupling Half,shaft, cataloged under National Stock Number 3010-01-373-0171, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-373-0171 |
| Primary Part Number | M50012012C |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Magnaloy Coupling Co Div of Douville-Johnston Corp |
| Status | ACTIVE |
| Bore Length | 2.2700 INCHES NOMINAL IN |
| Body Style | FLEXIBLE SPIDER, INSERT TYPE, THROUGH BORE |
| Outside Diameter | 4.800 INCHES NOMINAL IN |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT |
| Bore Diameter | 1.6260 INCHES NOMINAL IN |
| Material | ALUMINUM AND IRON CAST |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| M50012012C PRIMARY | Magnaloy Coupling Co Div of Douville-Johnston Corp (USA) |
| Reference | Meaning |
|---|---|
| M500B12012C | 5/9 Secondary reference Magnaloy Coupling Co Div of Douville-Johnston Corp |
NSN 3010-01-373-0171 is a Coupling Half,shaft, manufactured by Magnaloy Coupling Co Div of Douville-Johnston Corp, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-373-0171 has 1 manufacturer part number on file: M50012012C (Magnaloy Coupling Co Div of Douville-Johnston Corp).
Key specifications for M50012012C: Bore Length: 2.2700 INCHES NOMINAL IN; Body Style: FLEXIBLE SPIDER, INSERT TYPE, THROUGH BORE; Overall Length: 2.840 INCHES NOMINAL IN; Outside Diameter: 4.800 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.