Holesaw Arbor Hex Shank - 32 to 210mm Pilot Drill Included

Holesaw Arbor Hex Shank - 32 to 210mm Pilot Drill Included

The Holesaw Arbor Hex Shank is an 11mm hex shank arbor supplied with a pilot drill, designed for use with 32mm to 210mm diameter holesaws on hex shank drills and impact drivers. The 5/8 inch x 18 TPI thread covers the large diameter holesaw range used by electricians, plumbers, heating engineers, and mechanical contractors for larger cable and pipe penetrations, extract fan apertures, and access holes through timber, plasterboard, and board materials. Supplied with a pilot drill already fitted, it is ready to use straight from the packaging. The knurled locking collar visible on the arbor body provides a secure holesaw connection under the higher torque loads generated by larger diameter saws.

Why Choose the Holesaw Arbor Hex Shank 32 to 210mm

• Pilot drill included: supplied ready to use with no additional purchase required.

• Knurled locking collar: provides secure holesaw retention under the higher torque loads of large diameter cutting.

• 5/8 inch x 18 TPI thread: the standard thread for large diameter bi-metal and HSS holesaws across all major manufacturers.

• Fits 32mm to 210mm holesaws: covers the full large diameter range from standard downlight apertures to large mechanical penetrations.

• 11mm hex shank: secure non-slip connection on hex shank drills and impact drivers at operating torque.

• Compatible with hex shank drills and impact drivers: suits the most common tool configurations on UK construction sites.

What's Included

• One holesaw arbor, 11mm hex shank, 5/8 inch x 18 TPI thread
• One pilot drill, pre-fitted

 Specifications

 Compatibility

Who Is This For?

The Holesaw Arbor Hex Shank 32 to 210mm is aimed at electricians, plumbers, heating engineers, mechanical contractors, and general construction trades who use large diameter holesaws on hex shank drills and impact drivers. It suits the electrician cutting consumer unit and back box apertures, the plumber cutting large pipe penetrations through joists and panels, and the heating engineer cutting flue and duct penetrations through walls and ceilings.

Typical Applications

• Cutting large cable and consumer unit apertures through plasterboard and timber on electrical installations

• Cutting pipe penetrations through timber joists and structural panels on plumbing and heating installations

• Cutting extract fan and ventilation apertures through walls and ceilings

• Cutting downlight and recessed fitting apertures through plasterboard and MDF ceilings

• Cutting large access holes through timber, plywood, and board materials for mechanical installations

• Cutting flue and duct penetrations through wall and ceiling panels on heating and ventilation work

How to Use

1. Thread the holesaw onto the 5/8 inch x 18 TPI arbor thread and tighten the knurled locking collar firmly until the holesaw is fully secured.

2. Insert the 11mm hex shank into the drill or impact driver chuck and lock securely.

3. Mark the centre point of the required hole on the workpiece before starting.

4. Position the pilot drill on the centre point and begin at low speed before the holesaw teeth contact the surface.

5. Apply steady forward pressure without forcing the cut, particularly on larger diameter saws where torque loads are higher.

6. Withdraw periodically to clear debris from the tooth gullets on wood and board materials.

7. After breakthrough, reverse the drill briefly to loosen the plug before removal.

Safety

• Eye protection to EN 166 is mandatory for all hole sawing operations.

• Secure the workpiece firmly. Large diameter holesaws generate significant breakthrough torque.

• Always use the drill's auxiliary handle on larger diameter cuts to manage torque safely.

• Never exceed the drill manufacturer's recommended speed for the holesaw diameter in use.

• Locate concealed services before cutting through walls, floors, or ceilings.

Maintenance

• Remove the holesaw from the arbor after each use and clean debris from the thread and locking collar.

• Inspect the pilot drill for wear or damage before each use and replace when blunt.

• Check the knurled locking collar for smooth operation before each use.

• Apply a light coat of machine oil to the thread before storage.

• Replace the pilot drill independently rather than replacing the full arbor when wear occurs.

Frequently Asked Questions

Q: What size holesaws does this arbor fit?

 A: This arbor fits holesaws from 32mm to 210mm with a 5/8 inch x 18 TPI thread. For holesaws under 32mm, use the 14 to 30mm hex shank arbor.

Q: What is the difference between this arbor and the 14 to 30mm version?

 A: The primary differences are the thread size and diameter range. This arbor uses a 5/8 inch x 18 TPI thread for large diameter holesaws, whilst the smaller arbor uses a 1/2 inch x 20 TPI thread for 14 to 30mm saws.

Q: Does this arbor fit an SDS drill?

 A: No. This arbor has an 11mm hex shank for hex shank drills and impact drivers. For SDS drills, use a dedicated SDS arbor with the appropriate diameter range.

Q: Is the pilot drill replaceable?

A: Yes. The pilot drill fits independently and can be replaced when worn without replacing the full arbor.

Q: Can I use this arbor with an impact driver on large diameter cuts?

 A: For occasional use yes, but for sustained large diameter cutting a standard drill with torque control is recommended. Large diameter holesaws generate significant torque on breakthrough that can stress an impact driver beyond its design limits.

Q: Why should I order from CMT Group?

 A: CMT Group has supplied UK construction sites since 2010 with next working day delivery, a FORS Silver accredited fleet covering 90% of the UK mainland, and the EDGE portal for agreed contract pricing and live delivery tracking.

Holesaw Arbors: Complete UK Trade Specification Guide