Milwaukee 49-56-0052 Bi-metal Hole Saw 1-1/8 Inches

Product Description

The Milwaukee Electric Tool 49-56-0052 is a bi-metal hole saw designed for general-purpose cutting in metal, wood, and composite materials. Built to a 1-1/8-inch cutting diameter, this hole saw features a 3.5 TPI tooth geometry engineered to extend tooth life in demanding metal applications. A thermoset coating reduces friction during the cut, which is especially effective when running cordless tools — the coating is optimized to deliver more holes per battery charge compared to standard uncoated saws. Electricians, plumbers, and HVAC technicians will find this saw appropriate for everyday rough-in and panel work where accurate, repeatable hole sizing is required.

This hole saw is suited for residential and light commercial applications where a 1-1/8-inch opening is needed in sheet metal, steel enclosures, wood framing, or drywall assemblies. The all-access slots on the body allow for faster plug removal between holes, reducing downtime on the job. The slot design also provides improved pilot-bit visibility for accurate placement on a layout mark, and aids chip ejection to keep the cutting zone cooler during extended use. Compatible arbors include TV 138-921 and TV 145-615.

Key Features

• 1-1/8-inch cutting diameter for standard trade rough-in applications
• 3.5 TPI bi-metal tooth design engineered for extended life in metal cutting
• Thermoset coating optimized for cordless tool use, improving cuts per charge
• All-access slots allow fast plug removal and improved pilot-bit visibility
• Slot geometry promotes chip ejection to reduce heat buildup during the cut
• Lifetime Tooth Break Warranty per manufacturer

Compatibility

Compatible with arbors TV 138-921 and TV 145-615. Designed for use in standard bi-metal hole saw arbor systems for general-purpose cutting in metal, wood, and composite substrates.

Installation Notes

Installation of this hole saw is performed by licensed electricians, plumbers, HVAC technicians, and other trade professionals using a standard drill or right-angle drill with a compatible arbor. Secure the workpiece before drilling and ensure the pilot bit is properly seated before beginning the cut. Always wear appropriate eye protection and gloves when cutting metal. Follow applicable NEC or IPC requirements when sizing penetrations through structural or rated assemblies.

Technical Specifications

• Cutting Diameter: 1-1/8 inches
• Tooth Design: 3.5 TPI bi-metal
• Weight: 4.5 pounds
• Unit of Measure: EA
• Package Quantity: 24

Standard Information

• Brand: Milwaukee Electric Tool
• Manufacturer Part Number: 49-56-0052