GB/T 19674.1-2005 Connections for general use and fluid power—Ports and stud ends with thread—Threaded port

GB/T 19674.2-2005 Connections for general use and fluid power—Ports and stud ends with thread—Stud ends with elastomeric sealing(type A and type E) GB/T 19674.3-2005 Connections for general use and fluid power—Ports and stud ends with thread—Stud ends with metal-to-metal sealing(type B)

GB/T 19674.2-2005 Connections for general use and fluid power—Ports and stud ends with thread—Stud ends with elastomeric sealing(type A and type E) GB/T 19674.3-2005 Connections for general use and fluid power—Ports and stud ends with thread—Stud ends with metal-to-metal sealing(type B) GB/T 193-2003 General purpose metric screw threads—General plan GB/T 196-2003 General purpose metric screw threads—Basic dimensions GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 17446-1998 Fluid power systems and components—Vocabulary GB/T 17446-2012 Fluid power systems and components—Vocabulary GB/T 17446-2024 Fluid power systems and components—Vocabulary GB/T 196-2025 General purpose metric screw threads—Basic dimensions