GB/T 18685-2002

Abolished

The bar diameters for rolling general purpose metric screw threads

搓、滚制普通螺纹前的毛坯直径

Standard Type
GBT
ICS
21.040.01
CCS
J04
Status
Abolished
Issue Date
2002-03-10
Implementation
2002-08-01
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

Application Summary AI generated

This standard specifies the appropriate bar or workpiece diameters to be used before thread rolling or thread forming for general purpose metric screw threads. It is applied in mechanical manufacturing and fastener production to ensure the formed threads meet dimensional and tolerance requirements after the rolling process. The standard is critical for quality control in industries producing bolts, screws, and other threaded components.

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.