SIST EN ISO 4042:2022/oprA1:2025

Fasteners - Electroplated coating systems - Amendment 1 (ISO 4042:2022/DAM 1:2025)

Verbindungselemente - Galvanisch aufgebrachte Überzugsysteme - Änderung 1 (ISO 4042:2022/DAM 1:2025)

Fixations - Systèmes de revêtements électrolytiques - Amendement 1 (ISO 4042:2022/DAM 1:2025)

Vezni elementi - Sistemi galvanskih prevlek veznih elementov - Dopolnilo A1 (ISO 4042:2022/DAM 1:2025)

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Jul-2025
• ICS: 21.060.01 - Fasteners in general
• ICS: 25.220.40 - Metallic coatings
• Technical Committee: ISEL - Mechanical elements
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 16-Jun-2025
• Due Date: 03-Nov-2025
• Completion Date: 04-Aug-2025
• Ref Project: EN ISO 4042:2022/prA1 - Fasteners - Electroplated coating systems - Amendment 1 (ISO 4042:2022/DAM 1:2025)

Relations

• Amends: SIST EN ISO 4042:2022 - Fasteners - Electroplated coating systems (ISO 4042:2022)
• Effective Date: 02-Apr-2025

Overview

The SIST EN ISO 4042:2022/oprA1:2025 standard, titled Fasteners - Electroplated Coating Systems - Amendment 1 (ISO 4042:2022/DAM 1:2025), is a forthcoming update to the international standard regulating electroplated coating systems applied to fasteners. Developed under the auspices of ISO Technical Committee ISO/TC 2, Subcommittee SC 14, and administered by DIN, this amendment focuses on enhancing corrosion protection and performance testing methodologies for zinc-based electroplated coatings on fasteners.

This draft amendment, scheduled for voting between June and August 2025, addresses key updates that aim to improve industrial, technological, and commercial applicability of electroplated fastener coatings. It reflects ongoing efforts to harmonize coating standards for fasteners across industries, ensuring reliability, durability, and compliance with regulatory requirements.

Key Topics

• Scope of Amendment:
  The amendment revises specifications related to electroplated coating systems, with particular reference to zinc-nickel (ZnNi) passivation treatments used on fasteners to enhance corrosion resistance.

• Neutral Salt Spray Test (NSS) Enhancement:
  A significant update includes the addition of a footnote in Table 8 concerning zinc-based coatings. This clarifies that a transparent passivation layer (referred to as An) is permissible on ZnNi coatings. Despite having a thinner passivation layer, this transparent treatment provides corrosion protection comparable to the traditional thicker iridescent (silver-grey) passivation.

• Corrosion Protection Focus:
  The amendment emphasizes improved corrosion resistance performance of electroplated coatings, which is critical for fasteners used in harsh or corrosive environments.

• Technical Terminology:
  The document uses standard terms aligned with ISO/IEC Directives, ensuring consistency in language and testing procedures across international borders.

Applications

• Industrial Fasteners:
  Manufacturers of bolts, screws, nuts, and other fasteners benefit from the amendment by gaining clear guidance on electroplated coatings, helping them optimize production processes and guarantee consistent quality.

• Automotive and Aerospace Sectors:
  These industries require fasteners with superior corrosion resistance due to exposure to environmental stressors. The updated standard supports compliance with industry requirements and extended product life.

• Construction and Mechanical Engineering:
  Ensuring durable electroplated coatings on fasteners contributes to structural integrity and long-term safety in critical applications.

• Quality and Compliance Testing:
  Laboratories and quality control personnel use the detailed NSS testing guidelines to validate coating efficacy. The amendment aids in standardizing testing for better reproducibility and trust in results.

Related Standards

• ISO 4042:2022 - Fasteners - Electroplated Coating Systems:
  The base standard to which this amendment applies, providing fundamental requirements and test methods.

• ISO/TC 2/SC 14 Surface Coatings:
  The committee responsible for surface coating standards applicable to fasteners, offering complementary guidance on coating materials and processes.

• IEC/ISO Standards on Metallic Coatings:
  For broader context, including related metallic coating standards under ICS 25.220.40 covering metallic coatings technologies.

• National and Regional Versions of ISO 4042:
  Such as SIST EN ISO 4042 published by the Slovenian Institute for Standardization, reflecting localized adoption and language adaptations aligned with this international amendment.

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Keywords: Electroplated coatings, fasteners, zinc-nickel passivation, corrosion protection, neutral salt spray test, ISO 4042 amendment, coating standards, industrial fasteners, electroplating, surface treatment, zinc coatings, ISO/TC 2, SC 14.

This amendment is integral to evolving fastener coating standards, providing manufacturers and users with enhanced criteria to ensure fastener longevity and performance in diverse applications worldwide.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2025
Vezni elementi - Sistemi galvanskih prevlek veznih elementov - Dopolnilo A1 (ISO
4042:2022/DAM 1:2025)
Fasteners - Electroplated coating systems - Amendment 1 (ISO 4042:2022/DAM 1:2025)
Verbindungselemente - Galvanisch aufgebrachte Überzugsysteme - Änderung 1 (ISO
4042:2022/DAM 1:2025)
Fixations - Systèmes de revêtements électrolytiques - Amendement 1 (ISO
4042:2022/DAM 1:2025)
Ta slovenski standard je istoveten z: EN ISO 4042:2022/prA1
ICS:
21.060.01 Vezni elementi na splošno Fasteners in general
25.220.40 Kovinske prevleke Metallic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
Amendment
ISO 4042:2022/
DAM 1
ISO/TC 2/SC 14
Fasteners — Electroplated coating
Secretariat: DIN
systems
Voting begins on:
AMENDMENT 1
2025-06-02
Fixations — Systèmes de revêtements électrolytiques Voting terminates on:
2025-08-25
AMENDEMENT 1
ICS: 21.060.01
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ISO 4042:2022/DAM 1:2025(en)
DRAFT
ISO 4042:2022/DAM 1:2025(en)
Amendment
ISO 4042:2022/
DAM 1
ISO/TC 2/SC 14
Fasteners — Electroplated
Secretariat: DIN
coating systems
Voting begins on:
AMENDMENT 1
Fixations — Systèmes de revêtements électrolytiques Voting terminates on:
AMENDEMENT 1
ICS: 21.060.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
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