GB/T 838-1988
ActiveHexagon screws with waisted shank
六角头不脱出螺钉
Application Summary AI generated
GB/T 838-1988 specifies the dimensions, technical requirements, and marking for hexagon screws with a waisted shank, designed to prevent the screw from fully disengaging from the mating part after installation. It is primarily applied in mechanical assemblies where captive fasteners are required, such as in automotive, aerospace, or industrial equipment, to ensure components remain attached during maintenance or vibration. The standard is used by engineers and procurement professionals for specifying and sourcing these screws in manufacturing and quality control contexts.
Related Standards
GB/T 62.1-2004
Wing nuts--Round 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 9074.5-2004
Cross recessed small pan head screw andwasher assemblies with plain washers
GB/T 62.2-2004
Wing nuts--Square 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.