![]() Stainless steel is NOT corrosion-resistant. The heads are also easier to round out too. But bikes spec some pretty small bolts (flat mount brakes only use M5 bolts). Yet people seriously recommend people to get stainless steel stem bolts. That's because they are about as strong as butter. You will never see stainless steel spec'd for brake bolts or any critical bolt on any bike or car. Stainless steel is NOT strong: common grades of stainless are only a fraction of the strength of normal steel (less than half). Stainless steel fasteners are a severe liability to seizing or breaking off. This means you can't be safe from thread galling by lubricating the threads. If you use their correct, super-special (and also environmentally hazardous and soon-to-be-banned) Krytox grease, they were able to turn the bolts over 1000 times, but the same bolts seized in less then 10 turns even when using anti-seize, Ti-prep, and dozens of other lubricants. You can check their detailed testing on their website ( Why use only DuPont Teflon Bearing Grease?). This is why S&S frame couplers require you to use special grease on the threads. Even greasing the threads is no guarantee. So stainless steel is the WORST choice if you are worried about bolts seizing in your frame or parts. This is why you basically never see stainless steel hardware used in, well, pretty much any application. This can happen for no rhyme or reason it is just the nature of stainless steel. Stainless steel fasteners can gall so easily, you can have a quality bolt that is perfectly threaded into clean threads and if anything goes wrong it can instantly start galling to the point where it will be impossible to turn either way and you will have no choice but to snap it off. I know this first hand from working with them in marine and high-vacuum applications. But it's the opposite because stainless steel is the WORST because they have big problems with thread galling. ![]() So they think they are helping themselves avoid stuck or stripped hardware by getting stainless. Usually people associate stainless steel = less likely to rust = less likely to strip or seize. You should basically never use stainless steel bolts for anything unless you are designing them into the application. When in fact they are just about the worst fasteners you could choose. This includes screws made from high-quality A2 stainless steel, socket button screws, coach screws, Pozi screws, stainless steel self-tapping screws and more.I've seen it over and over again that people recommend stainless steel bolts as if they are the best. They can tolerate high heat and extreme cold, which is why they’re favoured in outdoor applications.Īt Toolstation, you’ll find an affordable selection of stainless steel screws from trusted brands such as Spax, FandF, and HEAD. Highly versatile, they can be used with a wide range of materials, including wood and sheet metal. Strong and naturally resistant to corrosion, stainless steel screws are perfect for external jobs, especially in wet or damp areas. What Are the Benefits of Stainless Steel Screws? They are ideal for outdoor use as they are rust-proof. Available in a vast range of lengths, widths, drive and head types, stainless steel screws can be used across various building, construction, renovation, home improvement and DIY applications. ![]() Stainless steel screws are a favourite with professionals and DIY enthusiasts alike. ![]()
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