... our factory specializes in manufactural all kinds of non-standard bolt& nut,screw,precision lathe parts, terminal crimper ... -standard bolt& nut specification: self-tapping screw,self drilling screw,machine screw,hexagonal bolts,hex socket bolts,expansion bolt,stainless steel ... bolts&nuts according to DIN,ANSI,JIS. besides,we can also customize all kinds of non-standard precision ...