Stainless I would argue belongs in material not in grade and class as these are different attributes. You can get grade 10.9 bolts in stainless, black, zinc plated and possibly in other materials and finishes. If it doesn't specify the type of stainless steel the safest thing to assume it's a low quality material which doesn't conform to any specific specification or at least lacks the appropriate accompanying paperwork.
I.e. I'll select a grade/class based on the mechanical properties I require, and the material will be selected taking into mind the environment the fastener is going into, any possible material incompatibilities there might be, i.e. don't want to accidentally build a battery, or select materials which gall together.
Honestly I think search in this area is actually extremely difficult due to all the inconsistent standards, specifications as well as random proprietary fasteners that exist.
I find that websites that sort by category to be better in this space, but that also assumes that you know what you want.
> Stainless I would argue belongs in material not in grade and class as these are different attributes. You can get grade 10.9 bolts in stainless, black, zinc plated and possibly in other materials and finishes. If it doesn't specify the type of stainless steel the safest thing to assume it's a low quality material which doesn't conform to any specific specification or at least lacks the appropriate accompanying paperwork.
I'd disagree there as stainless (at least in metric land) is categorized, in part, by strength e.g. A4-80 vs A4-70.
> Honestly I think search in this area is actually extremely difficult due to all the inconsistent standards, specifications as well as random proprietary fasteners that exist.
It is difficult, yes, but not impossible. This is why some of the folks have commenting have held up McMaster-Carr's site as an example.
We don't have the luxury of McMaster Carr here, but a quick search suggests that they have history and expertise in supplying engineering equipment which explains why they are so much better than Amazon.
It does seem like large tech companies tend to take less than stellar attempts into these sort of areas because they don't hire people with the appropriate expertise.
That said I appreciate the fact they don't for a number of reasons as it's definitely something I wouldn't want Amazon to step into and stomp the competitors in the field.
I.e. I'll select a grade/class based on the mechanical properties I require, and the material will be selected taking into mind the environment the fastener is going into, any possible material incompatibilities there might be, i.e. don't want to accidentally build a battery, or select materials which gall together.
Honestly I think search in this area is actually extremely difficult due to all the inconsistent standards, specifications as well as random proprietary fasteners that exist.
I find that websites that sort by category to be better in this space, but that also assumes that you know what you want.