Originally Posted by
Bianchigirll
What are you mounting to what kind of bike that thje supplied hardware will not work? Maybe you should not be doing that.
What grade are you looking for? Most cycling applications do not require aerospace grade hardware. I would think if it is good enough for a car or motorcycle it is good enough for bikes.
The guys at my local True Value are great but they get bewildered when I say I need a bolt. They ask what size and I say I am not sure. Ten minutes of pulling their drawers I have what I need. They think its odd I know what I want by sight and feel rather knowing I need a 3/39" x 55TPI T7 alloy cheese head stovebolt.
It's just that what they supplied me with would work w/o considering other accessories, but doesn't work once you add in other crap going into the same installation. So, my bolt needs to be twice as long as the one they supplied.
I can calculate the combined shear and torque and tension loads, if need be. However I mostly don't bother. If it is graded at all, it is probably sufficient for the need. Occassionally, you run across stuff that is just not graded at all...that I generally try to avoid, just because I don't know what the hell it is. It could be tin for all I know.
Mostly what I care about on a bike is corrosion resistance, so it behaves well with mixed metals.