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Silver 4.30 mm Twister Brad and Spur Drill bit with pointed tip and fluted shaft

M.A. Ford

M.A. Ford Twister Brad and Spur Drill 4.30 mm 20716930

SKU CH-D2P7-533WS

Brad and spur drill cuts clean 4.30 mm holes in wood with reduced tear-out

  • Precision brad-and-spur tip for clean holes
  • 30 mm diameter suits fine drilling tasks
  • M.A. Ford quality for reliable performance
  • New condition ensures full tool life
  • Manufacturer-direct supply chain

Twister Brad and Spur Drill 4.30 mm

The M.A. Ford Twister Brad and Spur Drill 4.30 mm is a precision drill bit designed for clean entry holes in wood and composite materials. It suits cabinetmakers and joiners who require accurate dowel or hinge boring without tear-out. The brad point centres the cut while the spurs shear fibres for a smooth bore. This accessory fits standard drill chucks.

Installation and common issues

The bit installs directly into any compatible drill chuck by tightening the jaws on the shank. No special adapters or tools are required for setup. The main difficulty arises if the chuck is not fully secured, which allows the bit to wander or slip during the cut. Dull spurs will also cause burning rather than clean shearing of the material fibres.

Capacity and headroom

The 4.30 mm diameter determines the exact hole size produced, suitable for specific dowel pins or hardware screws. It handles repetitive drilling in softwoods and hardwoods while maintaining diameter accuracy. The bit reaches its limit in abrasive composite boards that accelerate edge wear. It is not designed for metal, masonry or holes larger than its fixed diameter.

How it compares

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

Price $35.99
Pricier than about 58% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameM.A. FORD

Questions about this item

How do I confirm the 4.30 mm Twister Brad and Spur Drill is cutting correctly after installing it in my drill press?

Run the drill at the recommended speed for the material; a clean entry hole with sharp edges and no burning shows the 4.30 mm bit is working as intended.

What does the box contain for part number 20716930 and what must I supply myself?

The package includes the single 4.30 mm Twister Brad and Spur Drill; you must provide the drill press or hand drill, workpiece clamps and personal protective equipment.

Which capacity of the Twister Brad and Spur Drill should I choose for a 4.30 mm pilot hole?

Select the 4.30 mm version — model 20716930 — as it matches the exact pilot-hole diameter you need.

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