Milwaukee 3650-20 M18 Compact Brushless 1/4″ Hex Impact Driver – Tool Only

The Milwaukee 3650-20 M18 Compact Brushless 1/4″ Hex Impact Driver is built for fast driving in tight spaces with less fatigue over a full day. Measuring just 4.4″ long and 2.1″ wide, this lightweight 1.7 lb tool (bare) offers excellent access between studs, inside cabinets, and overhead. A brushless motor delivers up to 1,700 in-lbs of fastening torque with a top speed of 3,600 RPM and 4,900 IPM to keep lag screws, structural fasteners, and self-tappers moving. Three selectable speed modes plus a responsive variable-speed trigger help match power to the task, protect fasteners and material, and keep control on delicate starts.

Milwaukee’s REDLINK™ Intelligence manages power delivery and thermal performance with M18™ REDLITHIUM™ batteries for consistent output and longer life. An all-metal gearcase and premium internals support daily jobsite use, while the 1/4″ hex chuck speeds one-handed bit changes with common impact-rated bits. An integrated LED worklight brightens dark corners so installers can stay accurate. As part of the M18 System, this cordless impact driver works with 250+ tools to simplify batteries and charging across the kit.

Milwaukee M18 Compact Brushless 1/4″ Hex Impact Driver At a Glance

• Ultra-Compact Size (4.4″ L): Better access in cabinets, between studs, and overhead.
• Brushless Performance: Up to 1,700 in-lbs torque for common fastening tasks.
• Fast Driving Speed: 0–3,600 RPM and 4,900 IPM for high productivity.
• 3-Speed + Variable Trigger: Dial in power and speed to protect fasteners and materials.
• All-Metal Gearcase: Durability for daily site work and frequent bit changes.
• 1/4″ Hex Chuck: Quick, secure engagement with impact-rated bits.
• LED Work Light: Improves visibility in low-light areas.
• M18 Platform Compatible: Works with 250+ solutions on one 18V system

Markets

• Construction & Renovation: Structural screws, framing connectors, and hardware installs.
• Electrical & Low-Voltage: Tapcons, anchors, and device mounting in confined spaces.
• Plumbing & HVAC: Hangers, straps, brackets, and sheet-metal fasteners.
• Maintenance, Repair & Operations (MRO): General fastening on equipment and facility repairs.
• Automotive & Equipment Service: Interior panel clips, brackets, and light fabrication.
• Municipal & Facility Maintenance: Battery operation for work in occupied buildings.
• Trade Schools & Training Centers: Helps teach correct impact driver technique and setup.

Installers and maintenance crews benefit from a compact impact driver that still brings real driving power. The short 4.4″ head length improves balance and access, while three speed settings keep control on small hardware yet deliver speed for longer fasteners. With 1,700 in-lbs on tap and up to 4,900 impacts per minute, technicians can handle most daily fastening without switching tools. The M18 cordless platform keeps charging simple across the fleet, and the brushless motor paired with REDLINK electronics helps the tool run cooler and last longer. For contractors moving between tasks, the metal gearcase, LED light, and quick 1/4″ hex chuck make this a reliable everyday driver.

Milwaukee 3650-20 M18 Compact Brushless 1/4″ Hex Impact Driver – Tool Only Features

• Compact design provides excellent control for work in tight areas
• Brushless Motor delivers 1,700 in-lbs of torque and 3600 RPMs
• Variable speed trigger control reduces damage to the tool
• Compact size allows for unrivaled access in tight spaces
• Brushless Motor delivers the power to quickly complete most common applications
• Enhanced variable speed trigger control helps reduce damage to fastener and material
• Professional Durability with all metal gearcase and gears
• 0-3600 RPMs
• 1,700 in-lbs. of Peak Torque
• 4.4″ in Length and 2.1″ in Width
• 1.7 lbs tool only
• 5 year tool warranty
• Compatable with 250+ solutions
• Includes: M18 Compact Brushless 1/4″ Hex Impact Driver (3650-20)

Milwaukee 3650-20 M18 Compact Brushless 1/4″ Hex Impact Driver – Tool Only Includes

• (1) 3650-20 M18 Compact Brushless 1/4″ Hex Impact Driver (Tool Only)

Milwaukee 3650-20 M18 Compact Brushless 1/4″ Hex Impact Driver – Tool Only Specifications

• Platform: Milwaukee M18 (18V)
• Motor: Brushless
• Torque: 1,700 in-lbs peak
• No-Load Speed: 0–3,600 RPM
• Impacts per Minute: 0–4,900 IPM
• Speed Settings: (3) plus variable-speed trigger
• Chuck Type/Size: 1/4″ Hex
• Tool Length: 4.4 in
• Tool Width: 2.1 in
• Tool Height: 7.7 in
• Weight (Tool Only): 1.7 lb
• Battery/Charger: Tool only (batteries sold separately)
• Cordless/Corded: Cordless
• Power Tool Features: LED Light, Variable Speed, Compact
• Packaged Dimensions (L×W×H): 9.39 in × 3.9 in × 9.49 in
• Packaged Weight: 2.09 lb
• Number of Tools Included: (1)

Milwaukee 3650-20 M18 Compact Brushless 1/4″ Hex Impact Driver – Tool Only Warranty

• Milwaukee’s 5 Year Limited Warranty

Why Customers Choose the Milwaukee M18 Compact Brushless 1/4″ Hex Impact Driver

Crews choose the Milwaukee 3650-20 because a compact 1/4″ hex impact driver with a brushless motor delivers the speed and torque needed for anchors, structural screws, and hardware installs without adding bulk. The M18 platform lets teams share batteries and chargers with other tools, keeping packs in rotation and downtime low. With three speed modes, a variable-speed trigger, and 4,900 IPM, installers can start clean, avoid cam-out, and still drive long fasteners quickly. The all-metal gearcase adds durability for daily transport and rough conditions, while the LED light improves accuracy in cabinets and crawl spaces. For technicians who want a reliable cordless impact driver that fits where others don’t, this model balances power, control, and size for everyday jobsite work.