What is 12.9 Grade Steel?

12.9 grade steel bolts are among the strongest commercially available fasteners. Here's what the numbers mean, how they're made, and where they belong — and where they don't.

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Thread Stripping Causes & Solutions

Stripped threads are one of the most common and preventable fastener failures. Bolt-In Co Sunshine Coast breaks down why they happen, how to fix them, and — more importantly — how to avoid them in the first place.

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Avoiding Common Problems with Bolts

Bolts fail for predictable reasons. This guide covers the most common problems — from corrosion and fatigue to stripped threads and misalignment — and how to prevent them, with practical advice from the team at Bolt-In Co Sunshine Coast.

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12.9 Grade Steel vs Stainless Steel

Not all fasteners are interchangeable. This article compares 12.9 grade high-tensile steel and stainless steel fasteners — examining tensile strength, corrosion resistance, coating options, and the practical risks of substituting one for the other in structural and load-bearing applications.

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Metric Vs Imperial Fasteners

Metric and imperial fasteners look similar but aren't interchangeable. Bolt-In Co Sunshine Coast breaks down the key differences — diameter, thread pitch, and terminology — so you can choose the right fastener with confidence.

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Course and Fine Threads

Not all threads are equal — and choosing between coarse and fine can make a real difference to the performance and longevity of your fastened connection. Here's what you need to know.

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Steel Types Comparison

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.

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Fastening Into Stainless Steel: Drill, Tap, and Torque Tips for DIYers

Threading into stainless is doable, but it’s not like tapping into pine or even aluminium. You’ve got to respect the material — otherwise, it’ll chew up your tap and leave you with a half-threaded hole and a fresh reason to go to the pub early.

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Stainless Steel vs Galvanised Steel: Which One Should You Choose?

Alright, let’s start with the basics — what actually is the difference between stainless steel and galvanised steel?

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DIY Without the Drama: Avoid These 5 Fastener Fails

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

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