GB/T 20667-2006
ActiveUnified screw threads - Limits of sizes
统一螺纹 极限尺寸
Application Summary AI generated
This standard specifies the limits of sizes for unified screw threads, defining the maximum and minimum permissible dimensions for thread pitch diameters, major diameters, and minor diameters. It is applied in the manufacturing and quality inspection of threaded fasteners and components in mechanical systems, particularly for products requiring interchangeability with inch-based thread systems used in international trade and engineering.
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.