The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-226-7307, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-226-7307 |
| Primary Part Number | 4HMRB |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division |
| Status | ACTIVE |
| Bore Length | 4.7500 INCHES NOMINAL BOTH ENDS IN |
| Design Type | INTERNAL GEAR |
| Outside Diameter | 12.500 INCHES NOMINAL IN |
| Features Provided | EXPOSED COUPLING BOLT TYPE AND SPLINE GEAR TEETH |
| Bore Shape | ROUGH STOCK BOTH ENDS |
| Bore Diameter | 5.3750 INCHES MAXIMUM BOTH ENDS IN |
| 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 |
|---|---|
| 4HMRB PRIMARY | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division (USA) |
| 40G20RB | Rexnord Industries Llc (USA) |
| 4W ROUGH BORE PRIMARY | Reliance Electric Company Dba Reliance & Dodge Brands (USA) |
| 4-1/2A ROUGH BORE PRIMARY | Reliance Electric Company Dba Reliance & Dodge Brands (USA) |
| F-4RB EXPOSED BOLT PRIMARY | Woods T B Inc (USA) |
| F104RB PRIMARY | Ameridrives International Llc Dba Ameridrives International Llc (USA) |
| 1040G20RB | Rexnord Industries Llc (USA) |
NSN 3010-01-226-7307 is a Coupling,shaft,flexible, manufactured by Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-226-7307 has 7 manufacturer part numbers on file: 4HMRB (Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division), 40G20RB (Rexnord Industries Llc), 4W ROUGH BORE (Reliance Electric Company Dba Reliance & Dodge Brands), 4-1/2A ROUGH BORE (Reliance Electric Company Dba Reliance & Dodge Brands), F-4RB EXPOSED BOLT (Woods T B Inc) and 2 more.
Key specifications for 4HMRB: Bore Length: 4.7500 INCHES NOMINAL BOTH ENDS IN; Design Type: INTERNAL GEAR; Overall Length: 9.750 INCHES NOMINAL IN; Outside Diameter: 12.500 INCHES NOMINAL IN. 6 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.