Sutton H125 92mm Bi-Metal Cobalt M42 Holesaw

The Sutton H125 is a 92mm holesaw, a large size made from bi-metal cobalt HSS for the big round penetrations in vent, duct and exhaust work. It cuts to a 32mm depth and is listed for machine or hand drilling in steel, stainless steel, cast iron, non-ferrous metals, plastic and wood. This size runs on the UA3 or QFX arbor class with a BD24 or BD26 pilot, and it wants a drill with the torque to drive a large rim.

Key Features

• Bi-metal cobalt HSS for toughness and longer life
• 32mm cutting depth
• International thread standard accepts all standard arbors
• Listed for the UA3 or QFX arbor
• Suits machine or hand held drilling
• Cuts steel, stainless steel, cast iron, non-ferrous metals, plastic and wood

Specifications

• Diameter: 92mm (3 5/8 inch)
• Model: H125, white label series
• Material: bi-metal cobalt HSS
• Cutting depth: 32mm
• Thread: international thread standard
• Arbor and pilot: UA3 or QFX arbor, BD24 or BD26 pilot drill

Applications

• Exhaust fan holes through roofs and walls
• Vent and grille openings
• Duct entries through panels
• Large pipe and cable penetrations
• Industrial and commercial fitouts

What You Need To Complete The Job

Fit the 92mm saw to a Sutton quick fit arbor with a BD26 pilot drill and drive it with a low-speed drill with good torque. Use a lubricant on metal cuts. For masonry, change to an SDS masonry drill. The wider range is under Carpentry Tools.

Frequently Asked Questions

What is a 92mm holesaw used for?

A 92mm holesaw suits exhaust fans, large vents, duct entries and inspection openings that need a hole just over 3 and a half inches. It is a common size for roof and wall penetrations where a big fitting has to sit flush and round.

Do I need special equipment to drive this size?

At 92mm the saw has a large rim, so a drill with strong low-speed torque makes the job far easier. A corded drill or a heavy 18V cordless will manage it in sheet steel and timber. For repeat large holes, a pillar drill or magnetic drill is the professional choice.

How do I cut a large hole in metal roofing cleanly?

Mark the centre, start the pilot slowly, and let the rim bite before feeding. Keep the drill square and use a lubricant to stop the teeth overheating. Ease the pressure as the teeth break through so the saw does not grab the sheet edge.

Will the 32mm depth work for roof insulation sandwich panels?

The 32mm depth covers the top skin of a sandwich panel. For a full depth hole through the whole panel, drill the outer skin, clear the core, then continue through the inner skin from the far side. That keeps the hole round and the edges clean.