Halls MC 7M High-Speed Steel Step Drill 4-20mm | MC7M

Halls MC7M High-Speed Steel Step Drill Bit, 4–20mm (MC 7M)

Halls MC7M step drill bit is a high-speed steel metal drill bit designed for quick, controlled enlargement of holes in sheet materials, helping you reach the required diameter without changing bits. It’s a practical choice for installers, fabricators and maintenance work where clean, repeatable step sizes are needed.

The MC7M provides a stepped size range from 4mm up to 20mm, with a 10mm shank for secure chuck grip and a stated maximum material thickness of 4mm when used on suitable metals.

Key Features

• Stepped drilling range: Covers 4mm to 20mm so you can open out holes progressively with one bit.
• Parallel hole sizes: Designed to cut defined step diameters for consistent results in sheet materials.
• High-speed steel construction: Suitable for metal drilling applications requiring a durable cutting tool.
• 10mm shank: Made to fit a 10mm chuck for stable running and reduced slippage.
• Sheet-metal capability: Intended for use on metals up to the stated maximum thickness of 4mm.
• Coolant recommended: Use a coolant when drilling metals to help manage heat and support cutter life.

Specifications at a glance

Suitable applications

• Enlarging and sizing holes in sheet metal up to 4mm thickness.
• General metalworking, installation and maintenance tasks where multiple diameters are required.
• Workshop and site use with a drill or drill press (with a suitable chuck for 10mm shank).