Bosch 2608594575 Multi Material Threaded Hole Saw, 40 x 40 mm

Bosch 2608594575 Multi Material Threaded Hole Saw, 40 x 40 mm

The Bosch 2608594575 is a 40 mm bi-metal hole saw with a 40 mm cutting depth, built with Vario tooth geometry to cut clean holes through wood, drywall, metal and plastic. It runs on rotary drills and impact drill/drivers, and mounts via a threaded connection to a compatible hole saw arbor and pilot drill.

Key features

• Long-lasting bi-metal construction for durability across mixed materials
• Vario tooth design for smooth, efficient cutting with reduced vibration
• Multi-material rated — wood, drywall, metal and plastic
• 40 mm cutting depth — full thickness of a standard stud or a double-boarded partition in one pass
• Threaded connection for a secure, quick-change fit to a standard arbor
• Works with rotary drills and impact drill/drivers, corded or cordless

One hole saw, four material groups

Real jobs rarely stay in one substrate. A single service run can pass through plasterboard, a steel stud track, a softwood noggin and a plastic conduit — and swapping accessories at each layer costs time you don't have.

This saw handles all four. Bi-metal construction welds a high-speed steel cutting edge onto a tougher, more flexible backing body: the HSS edge holds up in steel where carbon-steel teeth would blunt within a handful of holes, while the flexible body absorbs shock instead of cracking. The Vario tooth pattern varies the tooth pitch around the crown rather than keeping it constant, which breaks up the vibration harmonics that cause chatter. In practice that means less snagging as the saw moves from board into metal, and less grabbing at breakthrough.

Why 40 mm?

A 40 mm bore is the size for the bigger service openings: larger cable bundles and glands, multi-core and armoured cable entries, ventilation and extract ducting spigots, lock and latch bores in softwood doors, consumer unit and enclosure entries, and floorboard cutouts for grouped pipework. It also passes 32 mm waste pipe with generous clearance where a tighter fit would bind.

At 40 mm deep, the cutting capacity clears the full thickness of a standard timber stud or a double-boarded partition in a single pass — no flipping the workpiece and meeting in the middle.

Built for the trades

Made for electricians, plumbers, carpenters, HVAC installers and maintenance teams who need consistent, accurate holes with minimum effort. Typical jobs:

• Cutting cable and duct openings through plasterboard and stud partitions
• Boring steel studwork track, light metal enclosures and consumer unit entries
• Drilling softwood joists, studs, battens and floorboards for pipe and cable runs
• Making clean openings in plastic trunking, ducting, back boxes and waste pipe

Fitting and use

The threaded mount screws onto a standard threaded hole saw arbor fitted with a pilot drill (both sold separately). Changing diameter means unscrewing one saw and threading on the next — no slipping, no tools.

For the best cut and the longest tool life: run at a low to moderate speed with hammer action switched off, let the pilot drill establish the centre before the crown engages, and use light, steady pressure. Hole saws cut by shearing, and over-speeding is the quickest way to blue the teeth — larger diameters like 40 mm need noticeably lower rpm than small ones, because the rim travels further per revolution. Use cutting fluid in metal and clear the swarf regularly; ease off at breakthrough in board and timber so the saw doesn't snatch. Eject the slug through the side slot as soon as the cut is done.

What's in the box

1 x Bosch 2608594575 Multi Material Threaded Hole Saw, 40 x 40 mm. (Supplied as the hole saw only — a threaded arbor and pilot drill are required and not included.)

3. Specification

4. FAQ (add as an on-page accordion — this is the section AI engines quote most)

What size hole does the Bosch 2608594575 cut? It cuts a 40 mm diameter hole, with a 40 mm maximum cutting depth.

What materials will the Bosch 2608594575 cut? Wood, drywall, metal and plastic. The bi-metal teeth handle sheet metal and steel stud track; the Vario tooth pitch keeps the cut smooth in softer boards and timber.

How deep will a 40mm Bosch hole saw cut? Up to 40 mm — enough to clear a standard timber stud or a double-boarded plasterboard partition in one pass.

What drill do I need? Rotary drills and impact drill/drivers, corded or cordless. Use a low to moderate speed setting and switch hammer action off — hammer action will wreck the teeth.

Does the Bosch 2608594575 come with an arbor? No. The pack contains the hole saw only. It has a threaded connection and requires a compatible hole saw arbor with a pilot drill, sold separately.

What is a Vario tooth design? Vario means the tooth pitch varies around the crown instead of staying constant. Varying the pitch disrupts the vibration harmonics that cause chatter, so the saw cuts more smoothly and is less likely to snag when it passes from one material into another.

What is the difference between a bi-metal and a standard hole saw? A bi-metal hole saw welds a high-speed steel cutting edge to a flexible alloy body. The HSS edge stays sharp in metal; the softer body flexes rather than shattering under shock. A single-material carbon steel hole saw costs less but dulls quickly in steel.

Can it cut tiles, masonry or brick? No. This saw is specified for wood, drywall, metal and plastic. Masonry, tile and concrete need a carbide or diamond-tipped hole saw instead.