Overview

The P&N 11 step drill covers 4mm to 25mm in one bit, drilling stepped holes in sheet metal without pre drilling. As the next step enters the hole it deburrs the edge from the previous step, so you get a clean hole in one pass. The 1/4 hex shank suits impact drivers and quick change adaptors.

Step drills are the practical choice for thin metal because they start small and open the hole gradually, which stops the bit grabbing and tearing the sheet. This one covers the common sizes for electrical, switchboard and roof sheet work in a single tool, so you are not changing bits between 4mm and 25mm holes.

Key Features

• 11 fixed steps from 4mm to 25mm
• Drills sheet metal without pre drilling
• Next step deburrs the previously drilled hole
• 1/4 hex shank suits impact drivers and quick change adaptors
• Non skid tip is easy to sharpen
• Straight flute with two cutting edges for control through the steps
• M2 high speed steel with TiN coating for up to 6X longer life

Specifications

• Steps: 11
• Diameter range: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 and 25mm
• Shank: 1/4 hex with power groove
• Material: M2 high speed steel
• Coating: titanium nitride (TiN)

Applications

• Stepped holes in sheet metal without pre drilling
• Aluminium, plastic and fibre glass
• Electrical and switchboard work
• Roof sheet and flashing fixing holes
• Deburring a hole edge as the next step passes through

What You Need to Complete the Job

Run the step drill through a Snappy drill adaptor or alongside a P&N quickbit hex shank drill to cover the rest of the fastening kit, and find more in the Metal Roofing Tools range. For thin sheet, run the drill at a steady speed and let the steps do the cutting rather than forcing it.

Frequently Asked Questions

Does a step drill need a pilot hole?

No. A step drill starts on the smallest step and cuts its own hole, so no pilot hole is needed in sheet metal. The non skid tip bites into the surface and the stepped body opens the hole up as you push through, which is what makes it a one pass tool.

What sizes does this 11 step drill cover?

It covers 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 and 25mm, eleven steps in one tool. Each step also deburrs the hole from the previous size as you go deeper, so the finished hole needs no separate cleanup with a file.

Can it be used in an impact driver?

Yes. The 1/4 hex shank with a power groove is built for impact drivers and quick change adaptors, so it locks straight in with no chuck key. That makes it a natural fit for a single driver setup on a roofing job.