Buy Concrete Screws Online in Australia
Concrete Screw + Masonry Screw Anchor Selection — Quick Reference
Concrete screws (masonry screw anchors / self-tapping masonry screws) thread DIRECTLY into pre-drilled concrete + brick + block + masonry WITHOUT shield or expansion. Self-tapping flutes cut threads in masonry as installed. Faster than expansion anchors.
| Concrete Screw Type | Best For |
|---|---|
| Hex Head Concrete Screw | Wrench-driven + high torque + visible head |
| Phillips / Pan Head | Lower profile + screwdriver drive |
| Countersunk / Flat Head | Flush surface required |
| Torx Drive | Maximum torque without cam-out |
| Common Diameters (6mm / 8mm / 10mm) | General installation |
| Common Lengths (50-200mm+) | Match to fixture + embedment |
| Galvanised / Zinc | Indoor + light corrosion |
| 304 / 316 Stainless | Outdoor + chemical + marine |
| Blue / Yellow Coloured (Brand) | Tapcon (blue) / similar identifier |
Critical: Drill hole DIAMETER MATCH spec exactly — typically 1mm smaller than screw diameter. Clean dust from hole before insertion. Don't reuse hole — second installation has reduced grip. Embedment depth MINIMUM 25mm into solid concrete. Concrete strength minimum 20 MPa typical. Compare with mechanical anchors (sleeve + chemical) for higher loads. Brands: Dynabolt, Mungo, Ramset. Companion: masonry anchors, concrete anchors, sleeve anchors.
Concrete Screws and Masonry Screw Anchors for Australian Industry
Concrete screws — also called masonry screw anchors or self-tapping masonry screws — thread directly into pre-drilled concrete, brick, block, and masonry without needing a separate anchor or plug. They're a fast, reliable fixing solution for trade, maintenance, and construction work across Australia. AIMS Industrial stocks masonry screw anchors from Champion, Hobson, and Bremick in hex head and countersunk configurations.
How concrete screws work
Unlike sleeve anchors or drop-in anchors, concrete screws cut their own thread into the base material as they're driven. Drill the correct diameter pilot hole (undersize to the screw OD), clean the hole, and drive the screw in — no expansion, no separate anchor component. The thread engagement with the masonry provides the holding strength. Removal is also possible in most applications, unlike expansion anchors which can't be removed cleanly.
Head styles
- Hex head (hex washer head) — faster install with an impact driver or socket; better for structural and high-volume fixing where appearance isn't critical
- Countersunk (flat head) — sits flush to the surface; used where a protruding head would be a trip hazard, obstruction, or cosmetic issue
Choosing the right size
Concrete screw performance depends on embedment depth (how far into the substrate the screw reaches beyond the fixture being fastened). Minimum embedment is typically 25mm; deeper embedment increases pullout resistance. For structural or safety-critical applications, refer to the manufacturer's load tables and apply appropriate safety factors. Common diameters stocked are 6mm, 7.5mm, and 10mm.
Base material compatibility
Concrete screws perform best in solid concrete and dense brick or block. Performance in lightweight aerated concrete (Hebel/AAC) is lower — check manufacturer load data for these substrates and consider lower working loads. Not suitable for use in cracked or deteriorated concrete.
Related fixings
For heavier-duty masonry fixing, see our masonry and concrete anchors range (sleeve, wedge, drop-in). For timber-to-masonry fixing, see our structural screws.
Need help selecting the right masonry fixing for a specific load or substrate? contact our team — we'll work through the application.