Milwaukee 2666-20 M18™ 18V Brushless Cordless 1/2-Inch High Torque Impact Wrench with Friction Ring Anvil – 1,200 ft-lbs Nut-Busting Torque – Tool Only

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SKU:
MIL2666-20
UPC:
045242745579
MPN:
2666-20
Availability:
Contact us
Weight:
2.4000 LBS
  • Milwaukee 2666-20 M18 Brushless 1/2 inch high torque impact wrench with friction ring.
  • Milwaukee 2666-20 M18 Brushless 1/2 inch high torque impact wrench with 800 ft-lbs fastening torque.
  • Angled view of Milwaukee M18 Brushless 1/2 inch high torque impact wrench with friction ring anvil.
  • Milwaukee 2666-20 M18 Brushless impact wrench specifications with torque, RPM, and IPM ratings.
$378.00
  • ✔️ Heavy-Duty Output: Delivers 800 ft-lbs fastening force at 1,750 RPM & 2,000 IPM. ✔️ Rapid Socket Swaps: Tool-free friction ring allows fast one-handed socket flips. ✔️ Intelligent Redlink Guard.
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Description

Milwaukee 2666-20 M18™ Brushless 1/2" High Torque Impact Wrench w/ Friction Ring

Massive High-Torque Muscle. Brushless Efficiency. Rapid Socket Swaps.

The Milwaukee 2666-20 M18™ Brushless 1/2" High Torque Impact Wrench delivers the extreme power required to tackle the most demanding heavy-duty fastening applications. Powered by an advanced Milwaukee Brushless Motor, this industrial-grade impact gun pumps out a massive 1,200 ft-lbs of nut-busting torque and 750 ft-lbs of fastening torque. From heavy equipment maintenance and structural steel erection to removing seized automotive suspension bolts, this cordless powerhouse eliminates the need for pneumatic hoses and loud air compressors.

Engineered for fast-paced professional shop environments, the 2666-20 features a heavy-duty 1/2-inch anvil with a friction ring (hog ring) design. This allows for quick, tool-free socket changes, letting you switch between metric and standard deep impact sockets in seconds. Backed by REDLINK™ Electronic Intelligence, the tool actively manages power delivery to protect the brushless motor against overheating and overloading during sustained high-draw situations. Wrapped in a premium rubber overmold, the ergonomic handle reduces vibration feedback and hand strain during long shifts.

Why the Milwaukee M18™ Brushless High Torque Impact Gun Is a Shop Essential:

  • 1,200 ft-lbs Nut-Busting Torque: Delivers incredible breakaway force to seamlessly snap loose rusted, frozen, and over-torqued commercial fasteners.
  • High-Efficiency Brushless Motor: Optimizes battery power consumption to deliver longer runtime per charge and a significantly longer tool life.
  • Friction Ring Anvil Layout: Provides a secure socket hold while allowing mechanics to slide sockets on and off rapidly by hand without retaining pins.
  • REDLINK™ Overload Protection: Advanced internal digital communication guards both the motor and battery pack from destructive heat buildup under extreme loads.
  • Built-In LED Workspace Light: Illuminates dark undercarriages, engine bays, and industrial equipment walls to ensure precise socket placement.

Specifications

Feature Specification
Voltage 18V (M18™ System)
Motor Type High-Efficiency Brushless
Anvil Size & Type 1/2 Inch Square with Friction Ring (Hog Ring)
Nut-Busting Torque 1,200 ft-lbs
Fastening Torque 750 ft-lbs
No Load Speed 0 - 1,750 RPM
Impact Rate 0 - 2,300 IPM (Impacts Per Minute)
Tool Length 8.87 Inches
Weight 5.3 lbs (Bare Tool)

Frequently Asked Questions

+ Does this high-torque impact wrench include a battery or storage case?
No. This SKU (2666-20) is the "Tool Only" (Bare Tool) version. It includes the bare impact wrench assembly. M18™ lithium-ion batteries, chargers, storage cases, and impact sockets are all sold separately.
+ What is the advantage of a friction ring anvil compared to a pin detent anvil?
A friction ring (or hog ring) utilizes a spring-loaded metal ring around the anvil tip to hold the socket in place. This allows you to pull sockets off quickly by hand, making it ideal for mechanics who change socket sizes frequently. A pin detent requires a tool or pin press to release the socket, focusing purely on maximum retention.
+ Can I use standard chrome hand tool sockets on this impact wrench?
No. Standard chrome sockets are thin-walled and brittle. They can shatter violently under the intense rotational impact forces of this 1,200 ft-lbs gun. Always use thick, black-oxide coated impact-rated sockets for your jobsite and shop safety.
+ Which M18™ battery pack is recommended to get maximum torque out of this tool?
To unlock the full 1,200 ft-lbs of nut-busting torque, we highly recommend pairing this tool with an M18™ REDLITHIUM™ FORGE™ XC6.0 or HD12.0 battery pack. High Output packs allow higher current flow, preventing the tool from stalling under extreme heavy structural loads.
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Product Specifications

category_bullets:
• 1,200 ft-lbs Loosening: High torque break-away power splits rusted nuts easily. • High-Efficiency Driving: Optimized for running large concrete anchors and lag bolts. • Friction Ring Anvil: 1/2" drive tip.
selling_points:
✔️ Heavy-Duty Output: Delivers 800 ft-lbs fastening force at 1,750 RPM & 2,000 IPM. ✔️ Rapid Socket Swaps: Tool-free friction ring allows fast one-handed socket flips. ✔️ Intelligent Redlink Guard.
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