ISO 4042-2018 pdf free.LED modules for general lighting – Safety specifications (IEC 62031:2018).
Specifications for other electroplated coatings and coating systems (tin, tin-zinc, copper-tin, copper- silver, copper, silver, copper-zinc, nickel, nickel-chromium, copper-nickel, copper-nickel-chromium) are included in this document only for dimensional requirements related to fasteners with ISO metric threads.
This document applies to bolts, screws, studs and nuts with ISO metric thread, to fasteners with nonISO metric thread, and to non-threaded fasteners such as washers, pins, clips and rivets.
Information for design and assembly of coated fasteners is given in Annex A.
This document does not specify requirements for properties such as weldability or paintability.
NOTE Other International Standards specify differing electroplating processes. For electroplating of
fasteners, the requirements of this document apply, unless otherwise agreed.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1456, Metallic and other inorganic coatings — Electrodeposited coatings of nickel, nickel plus chromium, copper plus nickel and of copper plus nickel plus chromium
ISO 1463, Metallic and oxide coatings — Measurement of coating thickness — Microscopical method
ISO 1502, ISO general-purpose metric screw threads — Gauges and gauging
ISO 189 1-2, Fasteners — Terminology — Part 2: Vocabulary and definitions for coatings
ISO 2081, Metallic and other inorganic coatings — Electroplated coatings of zinc with supplementary treatments on iron or steel
ISO 2082, Metallic and other inorganic coatings — Electroplated coatings of cadmium with supplementary treatments on iron or steel
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1891-2 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— I EC Electropedia: available at http://www.elect.ropedia.org/
3.1 reference panel reference material that is to be exposed to check the corrosivity level of the test cabinet used for fastener testing
4 General characteristics of the coating
4.1 Coating metals or alloys and main purposes
Electroplated coating systems for steel fasteners are primarily applied for corrosion protection and
functional properties, such as torque/clamp force relationship.
In addition, other functional properties or decorative properties can he specified; see AnncxA.
Table 1 shows commonly used electroplated coatings in relation with their main purposes and references to related ISO standards, which give additional general information not covered by this document, e.g. for designation. Some of the International Standards listed in TablcJ. specify differing electroplating processes. For the purpose of fasteners, the requirements of this document apply.ISO 4042 pdf free download.