Milwaukee 48899340 Step Drill Bit 6mm - 40.5 mm

Milwaukee 48899340 Step Drill Bit – 6mm to 40.5mm (17 Steps)

Milwaukee 48899340 step drill bit for fast, accurate drilling and clean hole enlargement in sheet materials, making it ideal for trades that need multiple hole sizes from one bit. Designed for use with a drill/driver, it helps reduce bit changes when working on panels, profiles and similar thin-gauge materials.

With a 6mm–40.5mm step range, Milwaukee 48899340 is a practical choice for electrical, HVAC and metalworking tasks where you want controlled step-by-step cutting and tidy results.

Key Features

• Wide step range: Covers 6mm to 40.5mm for drilling multiple diameters with one step bit.
• 17-step design: Ideal for progressive hole sizing and controlled enlargement.
• Rapid Strike tip: Helps centre quickly for reduced walking and faster drilling starts.
• Spot drill, drill & deburr action: Step geometry is designed to drill and deburr in one operation for cleaner holes.
• Jam-free step geometry: Helps reduce snagging risk when drilling at higher speeds.
• Laser-engraved size markings: Clear step identification for quick size selection.
• 3-flat Secure-Grip shank: Designed to reduce slipping in the chuck and improve torque transfer.

Specifications at a glance

Suitable applications

• Drilling and enlarging holes in ferrous and non-ferrous sheet metal, profiles and pipes.
• Working with copper, brass and aluminium, plus plastics.
• Typical trade use such as panel/cabinet work and access holes for installations.