GB/T 31.1-2013
ActiveHexagon bolts with split pin hole on shank
六角头螺杆带孔螺栓
Application Summary AI generated
This standard specifies the dimensions, technical requirements, and marking of hexagon bolts with a split pin hole through the shank. It is applied in mechanical assemblies and structural connections where a locking mechanism is required to prevent bolt loosening under vibration or dynamic loads, such as in automotive, railway, and heavy machinery applications. The split pin hole allows for the insertion of a cotter pin or split pin to secure the bolt in critical safety-related joints.
Related Standards
GB/T 9074.20-2004
Cross recessed hexagon head tapping screw with indentation and washer assemblies with plain washers
GB/T 62.2-2004
Wing nuts--Square wing
GB/T 62.3-2004
Wing nuts--Pressing wing
GB/T 62.1-2004
Wing nuts--Round wing
GB/T 9074.5-2004
Cross recessed small pan head screw andwasher assemblies with plain washers
GB/T 62.4-2004
Wing nuts--Die-casting wing
GB/T 3098.20-2004
Mechanical properties of fasteners--Wing nuts with specified proof torque
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.