... , 3. finish: zinc non-standard flat head socket rivets with internal thread1.Standards:DIN ,ANSI/ASME,BS,GB,JIS,Non-standard2 ... bolts,screws,studs,nuts,washers,threaded Rods,pins,rivets,stamping,circlips and other nonstandard parts.Shanghai Jinrui Norm Parts Supplies CO ... : A2-70, A4-80. Material: 304, 316, 316L.6. International internal and external hexagon bolt with the mechanical property of Grade ...