GB/T 12520-1990
ActiveOffset cruciform recess for rotary fastening devices
高扭矩十字槽
Application Summary AI generated
This standard specifies the dimensions, tolerances, and technical requirements for offset cruciform recesses designed for high-torque rotary fastening devices. It is applied in the manufacturing of screws, bolts, and other threaded fasteners used in mechanical assemblies, particularly in automotive, aerospace, and heavy machinery industries where high clamping forces and reliable torque transmission are critical. The standard ensures compatibility between fastening tools and recesses to prevent cam-out and drive failure during assembly or maintenance.
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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.