... steel, 3. finish: zinc non-standard flat head socket rivets with internal thread1.Standards:DIN ,ANSI/ASME,BS,GB,JIS ... as bolts,screws,studs,nuts,washers,threaded Rods,pins,rivets,stamping,circlips and other nonstandard parts.Shanghai Jinrui Norm ... of Excellent Quality", the company has successively introduced advanced multi-functional coldheading equipments and large-sized hot heading equipments and ...