if you need a set send me a message. I have 50 plus nuts and at my age I don’t buy green bananas! M8 is usual bike standard. Stainless grades are fine, problem is 304 stainless is supplied chemistry only and is not tested. Physical properties are more important than the corrosion resistant properties. Loads of very poor quality materials on the market. Buyer beware. Should be 316L which has higher tensile properties and lower elongation when torqued up. Flashed copper is used in high temp applications. Looks nice to!