Sutton H125 35mm Bi-Metal Cobalt M42 Holesaw

The Sutton H125 is a 35mm holesaw made from bi-metal cobalt HSS, built for machine or hand drilling in steel, stainless steel, cast iron, non-ferrous metals, plastic and wood to a depth of 32mm. At 35mm the saw is into the pipe and conduit class, big enough for plumbing penetrations and ventilation fittings but still manageable in a standard drill. The listing puts it on the UA2 or QFX arbor with a BD24 or BD26 pilot.

Key Features

• Bi-metal cobalt HSS for toughness and longer life
• 32mm cutting depth
• International thread standard accepts all standard arbors
• Listed for the UA2 or QFX arbor
• Suits machine or hand held drilling
• Cuts steel, stainless steel, cast iron, non-ferrous metals, plastic and wood

Specifications

• Diameter: 35mm (1.3/8 inch)
• Model: H125, white label series
• Material: bi-metal cobalt HSS
• Cutting depth: 32mm
• Thread: international thread standard
• Arbor and pilot: UA2 or QFX arbor, BD24 or BD26 pilot drill

Applications

• Plumbing pipe penetrations through floors and panels
• Downlight and fitting holes in timber and plasterboard
• Ventilation and cable holes through steel
• Electrical through-holes for heavier cable
• General metal, timber and plastic cutting

What You Need To Complete The Job

Mount this 35mm saw on a quick fit arbor with a BD26 pilot drill. When you move to concrete or brick, step up to an SDS masonry drill, and keep leather rigger gloves handy for handling cut metal. The full range is in Carpentry Tools.

Frequently Asked Questions

What size pilot hole does a 35mm holesaw need?

You do not drill a separate pilot hole with a holesaw. The pilot drill in the arbor centre makes the locating hole as the saw starts, and it is the 6.35mm BD24 or BD26 pilot listed for this size. A sharp pilot keeps the saw on the mark while the rim cuts.

Will a standard drill handle a 35mm saw in steel?

A corded drill or a strong 18V cordless will manage it in sheet steel and thin plate. Run at a moderate speed with steady pressure, and let the pilot hold the centre. In thicker plate, a pillar drill or a low-speed heavy drill is the better tool.

What is the cutting depth for this saw?

The listing gives a 32mm cutting depth for the H125 series. That covers sheet steel, most timber framing, plywood and plasterboard. For deeper material, drill through and clear the core, then finish from the other side.

Is this size good for downlights?

Yes. A 35mm hole is in the range used for recessed light fittings and small vent grilles in plasterboard and timber. The bi-metal teeth cut plasterboard cleanly, and the saw is small enough to keep the hole round and tidy.