... , 3. finish: zinc non-standard flat head socket rivets with internal thread1.Standards:DIN ,ANSI/ASME,BS,GB,JIS,Non-standard2 ... ,Southeast Asia ,etc.Professional production and processing: nut, nuts, pin shaft, stud bolt,screws, bolts, non-standard bolt, non-standard nut ... : A2-70, A4-80. Material: 304, 316, 316L.6. International internal and external hexagon bolt with the mechanical property of Grade ...