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Drywall Screws · GB/T 14210-1993
Drywall Screws

Drywall Screws

GB/T 14210-1993 (reference only)

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GB/T 14210-1993 dimension drawing

Dimensions in mm
GB/T 14210-1993 dimension drawing

Specification parameters

Technical conditions and referenced standards
Threads
  • The two thread starts shall be symmetrically distributed in transverse section. The end shall form a cone during thread rolling, with an intact point free of residual metal.
Tolerances
  • Coaxiality of the head with the shank axis shall be in accordance with GB/T 3103.1 for product grade A.
Surface discontinuities
  • Quench cracks are not permitted;
    The head shall be free of cracks visible to the naked eye. The junction between the head and shank shall be smooth and free of burrs;
    Surface rust is not permitted.
Surface treatment
  • The screw surface shall be phosphated. The coating shall be dry and grey-black, with a continuous, fine and uniform phosphate crystal structure;
    Obvious defects such as coarse crystals, uneven colour or mottling are not permitted.
Acceptance inspection and packaging
  • The acceptance quality limit for the bend angle test is AQL = 1.5. Other requirements shall be in accordance with GB/T 90 for the items specified for tapping screws.

Product overview

Drywall Screws to GB/T 14210-1993. For a quotation, specify the nominal size, any applicable length or thread pitch, material or property class, finish and quantity.