... 3-2, HMn58-2, HFe59-1 Application:auto parts of automoble,engineering machine,hydraulic machine,water pipe ,gas pipe, ... injection machine,etcOur advantage:1,years of OEM experience2,Finish: Zinc plated ,Chrome plated ,Nickle plated ... or samples4,a variety of kindsOur service:1,customized service2,fast delivery3,sample offered Non-standard bolts,nuts in hardware,brass fittings