Milwaukee 2466-20 M12 FUEL 1/2" Digital Torque Wrench
The Milwaukee 2466-20 M12 FUEL 1/2" Digital Torque Wrench with ONE-KEY is engineered for the higher-torque demands of aircraft heavy maintenance, MRO overhaul work, and ground support equipment servicing. With a 12.5–150 ft-lb range on a 1/2" drive, it covers the fastener classes that matter most in aviation — wheel and brake assemblies, engine mount hardware, structural airframe bolts, and heavy GSE attachment points — combining POWERSTATE brushless motor speed with calibrated torque accuracy and ONE-KEY digital documentation in a single tool.
Digital Torque Documentation for Aviation MRO and Part 145 Environments
The 2466-20 is the right tool for maintenance operations where torque isn't just performed — it has to be proven. The ONE-KEY torque logging system records every fastener torque event and generates downloadable reports accessible via the ONE-KEY smartphone app. For quality managers and lead mechanics working under FAA AC 43.13, AS9100, or Part 145 repair station quality systems, this replaces handwritten torque logs with verified digital records tied to specific jobs and technicians. The included calibration certificate supports formal introduction into calibrated tool control programs, and Milwaukee's recommended recalibration interval of 5,000 cycles aligns with standard MRO toolroom maintenance schedules.
- ONE-KEY digital torque logging — exportable reports for QA, inspection, and airworthiness sign-off documentation
- Bluetooth tool tracking, remote lockout, and inventory management via ONE-KEY app — FOD risk reduction for controlled tool environments
- Included calibration certificate supports Part 145 and ISO-aligned tool introduction documentation
- 5,000-cycle recalibration interval aligns with standard MRO toolroom maintenance practices
1/2" Drive Precision Across the High-Torque Fastener Spectrum
The 1/2" drive and 12.5–150 ft-lb range of the 2466-20 cover the fastener applications where over-torque and under-torque failures carry the highest consequences — propeller flange hardware, landing gear strut fittings, wheel and brake assemblies, and structural attachment bolts. Accuracy holds at ±2% CW and ±3% CCW across the full scale, consistently meeting or exceeding ISO 6789 Type II Class B performance requirements. Adjustable run-down torque prevents over-torquing on the first pass, protecting aluminum housings, composite panels, and threaded titanium hardware where damage tolerances are narrow. All four notification modes — audible, LED, LCD, and vibratory — fire simultaneously when the target is reached, ensuring the alert is received in high-noise hangar and flight line environments.
- 12.5–150 ft-lb range on 1/2" pin detent drive — covers wheel, engine, structural, and heavy GSE fastener applications
- ±2% CW / ±3% CCW accuracy of full scale — meets ISO 6789 Type II Class B performance levels
- Adjustable run-down torque protects aluminum and composite structures from over-torque damage
- Four simultaneous alert modes: audible, LED, LCD, vibratory — effective in high-noise maintenance environments
- Four measurement modes: ft-lb, in-lb, Nm, Kgcm — domestic and international maintenance specification coverage
Specifications
- Drive: 1/2 in., Pin Detent
- Torque Range: 12.5–150 ft-lb
- Accuracy: ±2% CW, ±3% CCW of full scale
- Speed: 0–100 RPM
- Length: 23.5 in. | Height: 2.81 in. | Width: 2.13 in.
- Weight: 5.7 lbs
- Power: 12V M12 REDLITHIUM (bare tool — battery not included)
- Housing: Aluminum
- Recalibration Interval: 5,000 cycles or after overload event
- Warranty: 5 Years
- Includes: Carrying Case, Calibration Certificate
| General Information | |
|---|---|
| Part # | 2466-20 |
| Manufacturer | Milwaukee Tool |
| Specifications | |
|---|---|
| Accuracy | ±2% CW, ±3% CCW of Full Scale |
| Connectivity | Milwaukee ONE-KEY Bluetooth |
| Drive Size | 1/2 in. |
| Drive Type | Pin Detent |
| Height | 2.81 in. |
| Housing Material | Aluminum |
| Includes | Carrying Case, Calibration Certificate |
| Languages | 6 (incl. English, Spanish, French) |
| Measurement Modes | ft-lb, in-lb, Nm, Kgcm |
| Motor | POWERSTATE Brushless |
| Notification Modes | Audible, LED, LCD, Vibratory |
| Overall Length | 23.5 in. |
| Power Source | 12V M12 REDLITHIUM (Bare Tool — Battery Not Included) |
| Recalibration Interval | 5,000 cycles or after overload event |
| Speed | 0–100 RPM |
| Torque Range | 12.5–150 ft-lb |
| Warranty | 5 Years |
| Weight | 5.7 lbs |
| Width | 2.13 in. |
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AIRCRAFT COMPATIBILITY
This item is for use on all aircraft.
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QUESTIONS & ANSWERS
Yes. The 1/2" drive and 12.5–150 ft-lb range directly cover the torque values specified for wheel and brake assembly hardware on most general aviation and regional aircraft types. The ±2% CW accuracy and ONE-KEY torque logging make it suitable for documented maintenance environments where torque records are required.
The 2466-20 uses a 1/2" drive and covers 12.5–150 ft-lb — a higher-torque range suited for wheel assemblies, engine hardware, and structural fasteners. The 2465-20 uses a 3/8" drive and covers 10–100 ft-lb, making it the better choice for lighter fastener applications like cowling hardware, avionics panels, and accessory gearbox fittings. Both share the same ONE-KEY reporting system and ±2% CW accuracy.
Milwaukee recommends recalibration every 5,000 cycles or after any overload event. Recalibration should be performed by a Milwaukee service center to restore ISO-conformant performance. The tool ships with a calibration certificate to document baseline accuracy at time of introduction.
No — the 2466-20 is the bare tool only, compatible with all Milwaukee M12 REDLITHIUM batteries. For high-cycle applications like wheel changes or structural panel work, the 48-11-2450 M12 XC5.0 battery is recommended for maximum runtime.
Yes. The included calibration certificate supports initial tool documentation requirements, and the 5,000-cycle recalibration interval is compatible with typical toolroom maintenance schedules. The ONE-KEY torque logging and reporting system can supplement maintenance record-keeping practices in Part 145 and ISO 9001 quality environments.