5speed:BTW stainless steel bolts have different grades....and different grades din sa bawat location/country. me British, American, Japanese...etc....

re grading...my bro once mentioned that stainless steel itself(not necessarily nuts and bolts) have difference grades...some lower grade ssteel are used on sinks n other fixtures...ung highest grade steel naman ginagamit for surgery n stuff...virtually corrosion resistant....