GB/T 949-1988
ActiveSlotted raised countersunk head screws with waisted shank
开槽半沉头不脱出螺钉
Application Summary AI generated
This standard specifies the dimensions, technical requirements, and marking for slotted raised countersunk head screws with a waisted shank, which are designed to prevent accidental loosening or detachment in applications where screw retention is critical. It is applied in mechanical assemblies, such as in automotive, aerospace, or industrial equipment, where screws must remain captive even when loosened, ensuring safety and reliability in vibration-prone environments. The standard is used by manufacturers and quality inspectors to verify compliance during production and procurement of these specialized fasteners.
Related Standards
GB/T 62.1-2004
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GB/T 62.3-2004
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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 9074.5-2004
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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.