GB/T 28271-2012

Active

Metric screw threads with extra fine pitch - Tolerances

米制超细牙螺纹 公差

Standard Type
GBT
ICS
21.040.10
CCS
J04
Status
Active
Issue Date
2012-05-11
Implementation
2012-12-01
Centralized Committee
国家标准委
Issuing Authority
中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会

Application Summary AI generated

This standard specifies the tolerance system for metric screw threads with extra fine pitches, defining the permissible deviations and limits for thread dimensions. It is applied in precision mechanical engineering, aerospace, and automotive industries where fine-pitch threads are used for high-strength fasteners, adjustment mechanisms, or vibration-resistant connections. The standard ensures interchangeability and reliable fit in assemblies requiring tight dimensional control, such as in optical instruments, hydraulic systems, or miniature devices.

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.