SPAX Hardwood Step Drill 4 — Suits SPAX 5.0mm and 6.0mm Decking Screws is the purpose-built countersinking tool for SPAX decking screws in hardwood. It pre-drills and countersinks in one step, ensuring a perfect flush finish every time and preventing surface splitting in dense hardwood species.

Key Benefits

• Two-in-one step drill — pre-drills the pilot hole and countersinks the head recess in a single operation, saving time and ensuring consistency.
• Specifically designed for SPAX decking screws — matched to the exact head diameter of SPAX 5.0mm and 6.0mm decking screws for a perfect countersink every time.
• Prevents surface splitting — essential for dense hardwoods like merbau, spotted gum, ironbark, and blackbutt where surface splitting is a risk.
• Ensures a perfect flush finish — consistent countersink depth means every screw sits perfectly flush with the deck surface.
• Compatible with SPAX 5.0mm and 6.0mm decking screws — suits both the 10G (A2 304) and 12G (A4 316) SPAX decking screw ranges.

Ideal Applications

Essential for hardwood decking installation using SPAX decking screws. Recommended for merbau, spotted gum, ironbark, blackbutt, tallowwood, and other dense Australian hardwoods where pre-countersinking is required to achieve a professional finish without surface damage.

Specifications

• Step Drill Size: 4 (4.0/6.5mm)
• Compatible Screws: SPAX 5.0mm and 6.0mm Decking Screws
• SKU: 5000009186540

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