Lyonsperf you are correct. The chinese bolts marked with 5 slashes are not even a grade 3. Im talking about the bolts which are used on the chinese vehicles or purchased from places like Lowes. Many of the suply houses such as fastnal, bowman use the ansi rating. I always tell my customers that you get what you pay for and just because they look the same doesn't mean they are the same. Much of the cheap chinese metal products come from recycled metal which is not the same as virgin metal. Does not matter which metal, everytime it is heated the molecular structure changes which causes the metal to react in a different way. I have a friend who owns a tool and dye company and he has often told me that the recycled metal they use for making dies lasts much less then if made with virgin materials His problem is he cannor get the same quality tool steel as in the past.
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