GB/T 20669-2006
ActiveUnified screw threads - Profiles
统一螺纹 牙型
Application Summary AI generated
This standard specifies the basic profile and design profile for unified screw threads, defining the geometric parameters such as thread height, root radius, and flank angles. It is applied in the manufacturing and inspection of threaded fasteners and components used in industries like aerospace, automotive, and general engineering, particularly where interchangeability with inch-based thread systems is required. The standard ensures consistent thread geometry for compatibility in assembly and performance testing across international supply chains.
Related Standards
GB/T 9144-2003
General purpose metric screw threads--Preferable plan
GB/T 2516-2003
General purpose metric screw threads--Limit deviations
GB/T 197-2003
General purpose metric screw threads--Tolerances
GB/T 196-2003
General purpose metric screw threads--Basic dimensions
GB/T 193-2003
General purpose metric screw threads--Generalplan
GB/T 192-2003
General purpose metric screw threads--Basic profile
GB/T 1414-2003
General purpose metric screw threads--The plan for pipe systems
GB/T 9146-2003
General purpose metric screw threads--Limits of sizes for the screw threads of coarse quality and preferable plan
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.