GB/T 18685-2017

Active

The blank diameters for rolling general purpose metric screw threads

普通螺纹搓制和滚制前的毛坯直径

Standard Type
GBT
ICS
21.040.01
CCS
J04
Status
Active
Issue Date
2017-09-29
Implementation
2018-04-01
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 blank diameters required for manufacturing general purpose metric screw threads through thread rolling (flat die rolling) and thread rolling (cylindrical die rolling) processes. It is applied in the mechanical engineering and fastener production industries to ensure that the pre-formed cylindrical blanks have the correct dimensions for achieving the final thread profile and tolerances after the rolling operation. The standard is used by manufacturers of bolts, screws, and other threaded components to control material volume and prevent defects during cold forming.

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.