Milwaukee 48-89-9204 Step Drill Bit 3/16-7/8 in 12 Steps

Product Description

The Milwaukee Electric Tool Corp 48-89-9204 is a step drill bit designed for drilling clean, accurately sized holes in metal and plastic materials. It covers hole sizes from 3/16 inches to 7/8 inches in 1/16-inch increments across 12 steps. The dual flute design increases speed control and cutting efficiency, with manufacturer claims of up to two times faster drilling compared to standard step bits. A black oxide coating reduces heat buildup and extends cutting life. Laser engraved reference marks on each step allow the installer to stop precisely on the target hole size without guesswork. The 3/8-inch shank features three flats to reduce slippage in the chuck.

This step drill bit is suited for electricians, plumbers, HVAC technicians, and general trades work where clean, stepped holes are needed in sheet metal, conduit enclosures, electrical panels, plastic junction boxes, or thin-gauge structural stock. The Rapid Strike tip geometry is optimized for fast, accurate starts and is designed to perform well in high-speed cordless drill applications, making it practical for field service work where portable tools are the standard.

Key Features

• Dual flute design for greater speed control and up to 2x faster cutting
• Rapid Strike tip for fast, accurate starts with reduced heat generation
• Black oxide coating for extended cutting life and reduced friction
• Laser engraved reference marks for precise hole sizing at each step
• 3-flat shank reduces bit slippage in the drill chuck
• 12 steps in 1/16-inch increments from 3/16 inches to 7/8 inches

Compatibility

Designed for use in metal and plastic applications; compatible with standard 3/8-inch drill chucks and optimized for high-speed cordless drills.

Installation Notes

This bit is installed by electricians, HVAC technicians, plumbers, and general tradespeople using 3/8-inch or larger keyed or keyless chucks. Secure the three-flat shank fully in the chuck before operating to prevent slippage. When drilling sheet metal, use appropriate cutting speed for the material thickness and allow the bit to clear chips between steps. Eye protection and gloves are required when drilling metal or plastic.

Technical Specifications

• Hole Size Range: 3/16 inches to 7/8 inches
• Step Increments: 1/16 inches
• Number of Steps: 12
• Shank Size: 3/8 inches
• Shank Type: 3-flat
• Coating: Black oxide
• Application: Metal and plastic
• Weight: 51.4 pounds

Standard Information

• Brand: Milwaukee Electric Tool Corp
• Manufacturer Part Number: 48-89-9204