Milwaukee 49-57-3870 Annular Cutter 3 7/8 in Steel Hawg

Product Description

The MILWAUKEE 49-57-3870 is a threaded Steel Hawg annular cutter designed to drill holes up to three times faster than standard twist drill bits. Built with abrasion-resistant carbide teeth and an alternating tooth form geometry, this cutter delivers clean, fast cuts through steel, stainless steel, cast iron, and aluminum. It handles hole depths up to 2 inches and features a spring-loaded, self-ejecting centering pin that improves cut accuracy and speeds up plug removal. Licensed HVAC, mechanical, and electrical tradespeople working with structural steel, unistrut, or plate stock will find this cutter well-suited for high-volume hole making with an electromagnetic drill press.

The 49-57-3870 is intended for use with electromagnetic drill presses in commercial and industrial applications where precise, repeatable holes are required in ferrous and non-ferrous metals. It is compatible with Milwaukee magnetic drill press model 4262-1 using arbor 49-57-0030, and with Milwaukee model 4292-1 using arbor 49-57-0010. The threaded shank uses an M18 x 1.5 thread and is also compatible with a No. 3 Morse taper arbor assembly 49-57-0010. It also works with most other electromagnetic drill presses accepting this thread standard.

Key Features

• Carbide teeth with alternating tooth form geometry for fast, clean cuts in steel and stainless steel
• Spring-loaded, self-ejecting pin serves as both a centering pin and plug ejector for faster workflow
• Cuts hole depths up to 2 inches in steel, stainless steel, cast iron, and aluminum
• Threaded M18 x 1.5 shank compatible with Milwaukee arbors 49-57-0030 and 49-57-0010
• Works with most electromagnetic drill presses accepting M18 x 1.5 threaded cutters

Compatibility

Compatible with Milwaukee magnetic drill press model 4262-1 using arbor 49-57-0030 and Milwaukee model 4292-1 using arbor 49-57-0010. Also accepts a No. 3 Morse taper arbor assembly 49-57-0010. Fits most electromagnetic drill presses with M18 x 1.5 threaded arbor connections.

Installation Notes

Annular cutters of this type are installed by licensed tradespeople or experienced mechanics using electromagnetic drill presses secured firmly to the workpiece before operation. Ensure the mag drill is fully energized and locked to the work surface before beginning a cut. Pilot pin must be properly seated to ensure accurate hole placement. Follow the drill press manufacturer torque and speed guidelines for the cutter diameter in use.

Technical Specifications

• Cutter Diameter: 3 7/8 inches
• Hole Depth Capacity: 2 inches
• Thread Size: M18 x 1.5
• Teeth per Inch: 2 TPI
• Tooth Material: Carbide
• Compatible Materials: Steel, Stainless Steel, Cast Iron, Aluminum
• Length: 4.6 inches
• Width: 4.3 inches
• Height: 3.85 inches
• Weight: 1.71 pounds
• Sold As: Each

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 49-57-3870