ISO 12125 - 1997 細牙六角尼龍法蘭鎖緊螺母 A級、B級 Prevailing Torque Type Hexagon Nuts With Flange(With Non-metallic Insert) With Metricfine Pitch Thread - Product Grades A and B
ISO 9255 - 2008 12角法蘭面螺釘 - 中短MJ螺紋 - 強度等級小于等于1100MPa Aerospace - Bolts, Normal Spline Head, Normal Shank, Short or Medium Length MJ Threads, Metallic Material, Coated or Uncoated, Strength Classes Less Than or Equal to 1100 MPa