DSF/prEN ISO 4042 rev ( Draft )

Fasteners – Electroplated coating systems (ISO/DIS 4042: 2019)

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This document specifies requirements for steel fasteners with electroplated coatings and coating
systems. The requirements related to dimensional properties also apply to fasteners made of copper or
copper alloys.
It also specifies requirements and gives recommendations to minimize the risk of hydrogen
embrittlement; see 4.4 and Annex B.
It mainly applies to fasteners with zinc and zinc alloy coating systems (zinc, zinc-nickel, zinc-iron) and
cadmium, primarily intended for corrosion protection and other functional properties:
– with or without conversion coating;
– with or without sealant;
– with or without top coat;
– with or without lubricant (integral lubricant and/or subsequently added lubricant).
Specifications for other electroplated coatings and coating systems (tin, tin-zinc, copper-tin, coppersilver,
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
The requirements of this document for electroplated fasteners supersede other general ISO standards
dealing with electroplating.
This document applies to bolts, screws, studs and nuts with ISO metric thread, to other threaded
fasteners 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.

Number of pages: 63

International relationships : prEN ISO 4042 rev IDT ISO/DIS 4042 IDT

ICS: 21.060.01 - Fasteners in general

Item number: M338584



  • CEN/TC 185
  • ISO/TC 2/SC 14

Danish committee