GB/T 5267.1-2002 in English

《GB/T 5267.1-2002紧固件 电镀层》由TC85（全国紧固件标准化技术委员会）归口，主管部门为中国机械工业联合会。
本部分规定了钢或钢合金电镀紧固件的尺寸要求、镀层厚度，并给出了高抗拉强度固件或硬化或表面淬硬紧固件消除氢脆的建议。本部分适用于螺纹紧固件电镀层，或其他螺纹零件。对自攻螺钉等的适用情况，见第8章。本部分的规定也适用于非螺纹零件，如垫圈和销。

This standard specifies dimension requirement and coating thickness for electroplated steel or copper alloy fasteners, and also offers suggestion of eliminating hydrogen embrittlement for high tensile strength fasteners or hardening or hardening fasteners.
This standard is applicable to electroplated coatings on threaded fasteners or other threaded parts. Its application for tapping screws is explained in Chapter 8.
Provisions of this standard are also applicable to non-threaded parts such as gasket and pin.