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Hexagon Flange Weld Nuts · GB/T 13681.2-2017
Weld Nuts

Hexagon Flange Weld Nuts

GB/T 13681.2-2017 (reference only)

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GB/T 13681.2-2017 dimension drawing

Dimensions in mm
GB/T 13681.2-2017 dimension drawing

Specification parameters

Technical conditions and referenced standards
Material
  • The carbon content shall not exceed 0.25%, and the carbon equivalent value (CEV) calculated using the following formula shall not exceed 0.53%:
    CEV=C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15
    If the nut is required to be quenched and tempered, its hardness shall not exceed 300 HV;
    Free-cutting steel is not permitted;
    If a material grade must be specified, it shall be agreed between the purchaser and supplier.
General technical requirements
  • GB/T 16938
Thread
Tolerances
  • 6G
Standard
  • GB/T 193, GB/T 9145
Mechanical properties
Proof load
  • See Table 3
Test method
  • GB/T 3098.2;
  • In the event of a dispute, remove the welding projections before testing.
Tolerances
Product grade
  • A
Standard
  • GB/T 3103.1
Surface discontinuities
  • GB/T 5779.2
Surface treatment
  • Nuts shall be delivered uncoated and unplated;
    Uncoated and unplated nuts may corrode during transport or storage. The manufacturer shall use corrosion protection that does not impair weldability.
Acceptance inspection and packaging
  • GB/T 90.1, GB/T 90.2

Product overview

A hexagon weld nut with a flange. Confirm flange geometry, thread and the requirements of the mating sheet before ordering.

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