The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-552-2148, 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 14 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-00-552-2148 |
| Primary Part Number | M40012816 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Magnaloy Coupling Co Div of Douville-Johnston Corp |
| Status | ACTIVE |
| Securing Method | KEY BOTH ENDS |
| Bore Length | 1.5880 INCHES NOMINAL BOTH ENDS IN |
| Design Type | INSERT |
| Keying Facility Type | KEYWAY BOTH ENDS |
| Outside Diameter | 4.000 INCHES NOMINAL IN |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT BOTH ENDS |
| Keying Facility Quantity | 1 BOTH ENDS |
| Keyway Width | 0.188 INCHES NOMINAL SECOND END IN |
| Keyway Width | 0.375 INCHES NOMINAL FIRST END IN |
| Bore Diameter | 1.7500 INCHES NOMINAL FIRST END IN |
| Bore Diameter | 1.0620 INCHES NOMINAL SECOND END IN |
| Furnished Items and Quantity | SETSCREW 2 |
| Insert Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| M40012816 PRIMARY | Magnaloy Coupling Co Div of Douville-Johnston Corp (USA) |
| 672068 PRIMARY | Barker Rockford Co, the Dba Heco Div Div Heco Division (USA) |
| Reference | Meaning |
|---|---|
| 400 | 5/9 Secondary reference Magnaloy Coupling Co Div of Douville-Johnston Corp |
NSN 3010-00-552-2148 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.
NSN 3010-00-552-2148 has 2 manufacturer part numbers on file: M40012816 (Magnaloy Coupling Co Div of Douville-Johnston Corp), 672068 (Barker Rockford Co, the Dba Heco Div Div Heco Division).
Key specifications for M40012816: Securing Method: KEY BOTH ENDS; Bore Length: 1.5880 INCHES NOMINAL BOTH ENDS IN; Design Type: INSERT; Keying Facility Type: KEYWAY BOTH ENDS. 14 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.