Milwaukee M18 ONEFHIWF12 FUEL ONE-KEY 1/2″ High Torque Impact Wrench
1,356 Nm 1/2″ impact wrench with 1,898 Nm nut-busting
- 18V
- 1,356Nm
The M18 ONEFHIWF12 is a 1/2″ friction-ring impact wrench with 1,356 Nm fastening torque and 1,898 Nm nut-busting torque. ONE-KEY lets fleet managers track it and set custom torque profiles from a phone.
Why this one
01
1,898 Nm nut-busting
Mode 4 frees seized nuts, then slows to keep control.
02
ONE-KEY control
Tracking, remote lock-out and custom torque presets via the app.
03
Friction ring anvil
1/2″ square drive for fast socket changes.
04
Blow-counting sensor
Helps repeat the chosen torque setting bolt after bolt.
The story
For heavy bolting
Steel erectors, plant fitters and groundworks crews dealing with M20 to M33 bolts need a wrench that can both tighten to a repeatable value and free rusted nuts. This tool delivers 1,356 Nm fastening torque and 1,898 Nm in bolt-removal mode from a body 213 mm long.
Repeatable settings
Four DRIVE CONTROL modes set speed and torque, and mode 4 starts at full power to break a nut loose before dropping to 750 rpm so it does not spin off the thread. A blow-counting sensor helps keep repeated tightening consistent, and the friction ring allows quick socket changes.
Connected fleet tool
ONE-KEY adds location tracking, inventory records and remote lock-out through the free app, plus custom torque presets. It runs on all M18 packs; HIGH OUTPUT batteries suit sustained bolting, and the tool is offered bare, bare in an HD Box or as a 5.0 Ah kit.
Specifications
Drilling & driving
- Torque, hard jointEF002842
- 1,356Nm
- Breakaway torque
- 1,898Nm
- No-load speed, gear 1EF011125
- 1,7501/min
- Impact rateEF004984
- 2,1001/min
- Tool holderEF002843
- ½″ square drive
- Hammer mode
- — No
- Kickback control
- — No
- Interchangeable heads
- — No
Power
- Power sourceEF000145
- Cordless (battery)
- VoltageEF000002
- 18V
- Motor
- Brushless
- Connectivity
- Milwaukee ONE-KEY
Physical
- LengthEF001438
- 213mm
- VibrationEF017820
- 16.7m/s²
- Vibration uncertaintyEF017821
- 1.5m/s²
- Sound pressureEF017718
- 94.9dB(A)
- Sound powerEF017719
- 105.9dB(A)
- LED work light
- — No
- Belt hook
- — No
