Choosing the right steel for your fasteners matters more than most people realise. This guide covers mild steel, stainless steel (SS304 and SS316), high tensile, and galvanised steel — what they are, where they perform best, and how to choose the right one for your project.

Let’s be honest — most DIY disasters don’t start with a sledgehammer. They start with a fastener. Or more accurately, the wrong fastener.

At Bolt-In Co Sunshine Coast, we stock all kinds of fasteners — from the humble coach screw to the kind of bolt you’d use to keep a tank’s wheels on. Somewhere near the top of the strength food chain? That’d be your Grade 12.9 steel bolts.