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Cylindrical 2.5 inch carbide grit hole saw with gulleted edge and side slot, silver metal finish

Morse

Morse MHSG40 2.5" carbide grit hole saw

SKU CH-KAAJ-XHG11

A 2.5" carbide grit hole saw for cutting hard abrasive materials including cinder block, cast iron and fiberglass, with a gulleted edge for chip clearance and a side slot for easier slug removal

  • Cuts hard abrasive materials with carbide grit edge
  • 5 inch diameter suits 64mm openings
  • Gulleted edge clears chips during cutting
  • Side slot improves leverage for slug removal
  • Requires separate Morse arbor 139830 or 139847

2.5" Carbide Grit Hole Saw

The Morse MHSG40 is a 2.5 inch diameter carbide grit hole saw built for hard or abrasive materials such as cinder block, cast iron, unglazed ceramics, fiberglass and composites. Its gulleted cutting edge clears chips during the cut while a unique side slot improves leverage and eases slug removal across various material thicknesses. One hole saw is supplied per box.

Suited for abrasive cutting, not general woodwork

Tradespeople who need clean holes in masonry, metal or composite panels will benefit from the carbide grit edge and chip-clearing gullets. Users looking for a standard bi-metal saw for wood, plastic or mild steel should choose a different tool because the grit design is optimised for abrasive substrates. The saw also requires a separate arbor, so buyers without a compatible Morse arbor must purchase one separately.

Arbor required, slug removal simplified

Installation consists of mounting the saw onto a Morse MA35PSNCT or MA45PSNCT arbor, which are sold separately. The most common issue is attempting to use the saw without the correct arbor, which prevents secure chucking and safe operation. The side slot design helps eject the slug, but the slot can clog if cutting very thick or sticky materials without periodic clearing.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 57% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameMORSE

Questions about this item

Which Morse arbor do I need to run the 2.5" carbide grit hole saw?

The MHSG40 requires a separate Morse arbor — use the MA35PSNCT (139830) for 3/8" chucks or the MA45PSNCT (139847) for 1/2" chucks.

Can the 2.5" hole saw share the same Morse MA35PSNCT arbor I already use on smaller Morse saws?

Yes — the MA35PSNCT (139830) fits this 64 mm saw and your existing smaller Morse hole saws, so one arbor covers both sizes.

How do I know the carbide grit edge is cutting correctly in cast iron or fiberglass?

Steady, fine grit-style dust and a clean, round 64 mm hole without binding show the gulleted edge and side slot are clearing chips and ejecting the slug as designed.

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