... 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- ... and external hexagon bolt products: A2-70, A4-80. Material: 304, 316, 316L.6. International internal and external hexagon ...