Description
Milwaukee 400N Brushless Cordless 1/2″ Electric Wrench – Ultimate Power for Car & Truck Repairs
Engineered for professional mechanics and serious DIY enthusiasts, the Milwaukee 400N delivers unmatched torque and precision in a compact, cordless package. With a brushless motor, 18 V rechargeable battery compatibility, and a rugged 1/2‑inch impact wrench head, this tool tackles stubborn bolts, lug nuts, and fasteners on cars, trucks, and heavy‑duty equipment with ease.
Key Highlights
- Brushless Motor Technology: Provides up to 30 % more runtime, higher efficiency, and longer tool life compared to brushed counterparts.
- Powerful 1/2‑inch Impact Wrench: Delivers up to 1,300 in‑lb of torque for quick removal and installation of lug nuts and large fasteners.
- 18 V Battery Compatibility: Works with all Milwaukee M18™ batteries for seamless integration into your existing power‑tool ecosystem.
- Variable Speed & Two‑Speed Settings: Choose the optimal speed for delicate screwdriving or high‑impact applications.
- Ergonomic Design: Soft‑grip handle and lightweight chassis reduce user fatigue during extended use.
- LED Work Light: Bright, adjustable illumination shines directly on the work area for improved visibility in dark engine bays.
- Durable Construction: All‑metal gear housing and reinforced chuck withstand harsh workshop conditions.
Why Choose Milwaukee?
Milwaukee is the industry benchmark for reliability and performance. The 400N model combines the brand’s legendary durability with cutting‑edge brushless technology, ensuring you get maximum power without sacrificing battery life. Whether you’re on the shop floor or in the field, this wrench delivers consistent results, time after time.
Technical Specifications
- Motor Type: Brushless
- Battery Platform: M18™ 18 V Lithium‑Ion
- Maximum Torque: 1,300 in‑lb (≈147 Nm)
- Impact Rate: 0–4,500 impacts/min
- Speed Settings: 0–2,500 rpm (low) / 0–3,800 rpm (high)
- Chuck Size: 1/2‑inch (12.7 mm)
- Weight: 3.2 lb (1.45 kg) – tool only
- Dimensions: 9.6 in × 4.1 in × 2.2 in (245 mm × 105 mm × 55 mm)
- Warranty: 5‑year limited warranty
Ideal Applications
Perfect for automotive and truck repair, heavy‑duty construction, fleet maintenance, and any task that demands high torque in a portable, cordless format.






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