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Flat Wood Drill Bits

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When rapid boring through timber is your top priority, our flat wood spade drill bits deliver maximum speed and clean breakouts. Available as individual bits, they feature optimised cutting spurs and threaded centers that actively pull the bit through the wood. This makes them the ultimate choice for fast rough-boring through joists, studs, and timber frames to route electrical cables, conduit, or flexible plumbing lines. These flat drill bits are also suitable for use with plasterboard and other light building materials.

Why not browse our extensive range of building materials, our varied selection of plasterboards and benefit from free next delivery on qualifying orders today.

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Bosch Expert Self-Cut Speed Spade Drill Bit 18 x 152 mm
Product Code: 207711
Bosch Expert Self-Cut Speed Spade Drill Bit 18 x 152 mm
Retail price

£6.43

each
£5.36 ex. vat
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£5.78

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Bosch Expert Self-Cut Speed Spade Drill Bit 25 x 152 mm
Product Code: 720725
Bosch Expert Self-Cut Speed Spade Drill Bit 25 x 152 mm
Retail price

£10.78

each
£8.98 ex. vat
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£9.70

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Bosch Expert Self-Cut Speed Spade Drill Bit 20 x 152 mm
Product Code: 720723
Bosch Expert Self-Cut Speed Spade Drill Bit 20 x 152 mm
Retail price

£10.32

each
£8.60 ex. vat
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£9.29

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Bosch Expert Self-Cut Speed Spade Drill Bit 32 x 152 mm
Product Code: 720726
Bosch Expert Self-Cut Speed Spade Drill Bit 32 x 152 mm
Retail price

£11.54

each
£9.62 ex. vat
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£10.39

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Bosch Selfcut Flat Hex Drill 25 x 152mm 2608587580
Product Code: 856609
Bosch Selfcut Flat Hex Drill 25 x 152mm 2608587580
Retail price

£10.55

each
£8.79 ex. vat
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£9.49

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Bosch Selfcut Flat Hex Drill 20 x 152mm 2608587577
Product Code: 523047
Bosch Selfcut Flat Hex Drill 20 x 152mm 2608587577
Retail price

£9.18

each
£7.65 ex. vat
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£8.27

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Bosch Selfcut Flat Hex Drill 22 x 152mm 2608587578
Product Code: 356267
Bosch Selfcut Flat Hex Drill 22 x 152mm 2608587578
Retail price

£9.53

each
£7.94 ex. vat
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£8.58

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Showing 1—7 items of 7

Learn more about flat wood drill bits

A professional spade cutter is designed to remove a massive volume of waste material in seconds. Traditional flat drill bits feature a flat spade blade with two raised outer cutting spurs that score the wood fibres ahead of the main edge, reducing friction and minimising edge tearout. Advanced iterations take this further by incorporating contoured, paddle-shaped designs and continuous threaded screw-tips. This specialised geometry acts like a screw thread, mechanically feeding the bit forward into the grain to deliver drilling speeds up to ten times faster than standard spade patterns.

 

Our collection includes top-tier Bosch spade bits featuring advanced threaded center tips that actively pull the bit into the wood, dramatically reducing the physical pressure you need to apply on the drill. Equipped with standardised 1/4 inch hex shank bits, these cutters offer a secure, non-slip fitment in quick-change chucks and high-torque impact drivers alike. 

 

Typical uses

Our industrial-grade wood boring bits are optimised to execute fast, repeatable openings across multiple first and second-fix building tasks:

 

 

  • Lock and hardware installation: Boring deep, wide internal recesses into timber doors to accept mortise lock bodies, cylinders, and tubular latches.

 

  • Structural timber assembly: Creating wide, clean clearance countersinks in heavy timber posts and railway sleepers to submerge large coach screws or bolt heads beneath the surface.

 

  • Drywall utility access: Piercing quickly through composite plasterboard and timber batten backings to establish clean entry paths for flexible pipes and services.

 

How to choose the right flat wood drill bits

Choosing the perfect flat boring bit configuration keeps your drill running cooler and prevents premature accessory failure:

 

  • Tip architecture: For absolute maximum speed and minimum user effort, choose advanced self-feeding wave-blade shapes; for controlled, precision-depth boring or cleaner entries, standard flat-profile spade bits are more reliable.

 

  • Shank design: Ensure the bit has a standard 1/4-inch hex shank with a quick-release notch to prevent the bit from spinning loose inside standard 13mm keyed chucks under heavy loads.

 

  • Extension options: If you are drilling through deep building envelopes, multiple stacked joists, or deep wall cavities, pair your bit with a dedicated locking hex extension bar to increase your overall reach by up to 300mm.
     

  • Set vs. singles: For general site kits, comprehensive multi-piece sets give you instant access to all standard trade diameters (typically 10mm to 32mm), whereas single bits are perfect for replacing your most frequently used sizes.


 

Before you order

Protect your tools and maintain maximum efficiency by verifying these essential project details before checking out:

 

  • Verify your required diameter: Double-check your pipe or conduit outer diameters to ensure you select a millimetre size that leaves adequate clearance for your materials to pass through easily.

 

  • Clear your workspace: Before drilling into existing walls or floors, always utilise a stud and pipe detector to verify that your drilling path is entirely free of hidden live cables or pressurised water mains.

 

  • Assess wood density: If you are boring into dense, green oak or pressure-treated external sleepers, remember to periodically back the bit out of the hole during operation to clear packed sawdust and prevent thermal burnout.

 

 

Explore our range of flat wood drill bits

Achieve incredibly fast boring speeds and flawless site efficiency by exploring our comprehensive online collection of professional flat wood drill bits. Stocking leading innovations from industry-trusted brands like Bosch, we supply the rugged, high-performance tooling required to blast through first-fix tasks with ease. 

 

Browse our full category online today to find individual spade bits, multi-piece quick-change sets, and heavy-duty extension bars.

 

Log in to your trade account to unlock competitive trade prices and instantly view stock levels at your closest branch. Explore the full flat drill bits collection today to pick up single profiles or complete, jobsite-ready sets via our 1-hour Click& Collect service.

FAQs about flat wood drill bits