non-standard flat head socket rivets with internal thread 1. standard: non-standard. 2. material: steel, 3. finish: ... zinc non-standard flat head socket rivets with internal thread1.Standards:DIN ,ANSI/ASME,BS,GB,JIS,Non-standard2 ... -70, A4-80. Material: 304, 316, 316L.6. International internal and external hexagon bolt with the mechanical property of Grade 4.8, 8 ...