... 8mm ~ 12mmXiamen Libiao Hardware Co., Ltd. is a professional fastener manufactory. We are focusing various fastener manufacture in China, Our monthly ... engineer.Quality standard: ISO 9001:2008Established in 2004Work flow:Spring Product profileScrews sort: Machine screws, Self tapping screws, ... nuts, Wing nuts, Hex nuts etcWasher sort: Plain washer, Spring washer,Star washer,Tooth washer etc.CNC parts