GB/T 70.4-2025
ActiveFasteners—Hexagon socket screw—Part 4: Hexagon socket button head screws with collar and reduced loadability
紧固件 内六角螺钉 第4部分：降低承载能力内六角平圆头凸缘螺钉
Application Summary AI generated
This standard specifies the dimensional, mechanical, and performance requirements for hexagon socket button head screws with a collar and reduced loadability. It is applied in mechanical assemblies where space is limited and a lower-strength fastener is intentionally used to act as a mechanical fuse, preventing damage to more expensive components under overload conditions. The standard is relevant for industries such as automotive, machinery, and electronics manufacturing.
Related Standards
GB/T 9074.5-2004
Cross recessed small pan head screw andwasher assemblies with plain washers
GB/T 62.1-2004
Wing nuts--Round wing
GB/T 62.2-2004
Wing nuts--Square wing
GB/T 9074.20-2004
Cross recessed hexagon head tapping screw with indentation and washer assemblies with plain washers
GB/T 62.3-2004
Wing nuts--Pressing wing
GB/T 3098.20-2004
Mechanical properties of fasteners--Wing nuts with specified proof torque
GB/T 62.4-2004
Wing nuts--Die-casting wing
GB/T 3098.19-2004
Mechanical properties of fasteners--Blind rivets with break pull mandrel
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.