Milwaukee M18 Fuel 1/4" Lockbolt Tool with One-Key

The Milwaukee Lockbolt Tool with ONE-KEY™ (2661-20) is the industry’s first cordless lockbolt and Huck bolt installation tool, designed for maximum productivity and unmatched control. Powered by the M18 FUEL™ brushless motor and REDLINK PLUS™ intelligence, it delivers the performance of pneumatic systems without hoses or compressors. Engineered for professional use in heavy equipment, trailers, rail, and structural steel applications, this lockbolt tool provides up to 2X faster installation with consistent, secure fastening every time. The ONE-KEY™ integration allows for tracking, management, and tool security through the Milwaukee app — giving you total visibility and control on the job site. With its ergonomic design, dual trigger operation, and advanced pull force, the M18 FUEL™ Lockbolt Tool ensures reliable installation of 1/4" lockbolts while reducing fatigue and downtime.

Cordless Power, Pneumatic Performance

Eliminates air hoses and compressors while delivering comparable speed and strength.

Provides maximum fastening speed and consistent pull performance across applications.

Track, manage, and secure your tool digitally through the Milwaukee ONE-KEY™ app.

Engineered to install 1/4" lockbolts and Huck bolts quickly and accurately.

Enhances control and comfort during repetitive fastening tasks.

Lightweight magnesium housing withstands harsh jobsite conditions.

Brightens work areas for improved accuracy in low-light environments.

Compatible with over 250+ M18™ tools and batteries.

Model Number: 2661-20

Tool Type: 1/4" Lockbolt / Huck Bolt Installation Tool

Power Source: Cordless – M18™ REDLITHIUM™ Battery

Pull Force: 7,000 lbf

Stroke Length: 1.18" (30 mm)

Voltage: 18V

Fastener Range: 1/4" Lockbolts and Huck Bolts

Weight (Tool Only): 5.5 lbs

LED Work Light: Yes

Connectivity: ONE-KEY™ Tool Tracking and Management

Warranty: 5-Year Limited Warranty