GB/T 5267.2-2021: Fasteners - Non-electrolytically applied zinc flake coatings

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Scope

This document specifies the technical requirements for non-electrolytically applied zinc
flake coatings on steel fasteners.
This document applies to the following coatings:
- With or without hexavalent chromium;
- With or without topcoat;
- With or without lubrication (self-lubricating and/or additional lubrication).
This document applies to ISO metric threaded bolts, screws, studs, nuts, non-ISO metric
threaded fasteners, unthreaded fasteners such as washers, pins, clamps, etc.
This document does not specify the weldability or coating performance of fasteners and
is not applicable to mechanical galvanizing.
Note: High-strength fasteners (tensile strength ≥ 1000 MPa) use coatings that comply with this
document to avoid the risk of internal hydrogen embrittlement (see 4.4).
For information on the design and installation of coated fasteners, see Appendix A.

Basic Data

Standard ID	GB/T 5267.2-2021 (GB/T5267.2-2021)
Description (Translated English)	Fasteners - Non-electrolytically applied zinc flake coatings
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J13
Word Count Estimation	34,350
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration