GB/T 821-2018
ActiveSquare set screws with chamfered end
方头平端紧定螺钉
Application Summary AI generated
GB/T 821-2018 specifies the dimensions, technical requirements, and marking for square set screws with chamfered ends, used to secure components against relative rotation or axial movement. It is applied in mechanical assemblies, such as in machinery, automotive parts, and industrial equipment, where a square head allows for higher torque application during tightening. This standard ensures interchangeability and reliability in fastening applications requiring a flush or recessed screw end.
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.