Find a finish / Specification reference

Plating specifications.
Find your finish.

Find Zinc Nickel (ZnNi), Tin Zinc (SnZn), and Zinc Iron (ZnFe) plating by manufacturer or specification number. Each reference links to the relevant finish and its application notes.

OEM & industry reference

Search by specification
or manufacturer.

A drawing may identify a finish by a specification number, coating code, alloy designation, or proprietary system. Use this directory to find the listed finish association, then review the complete drawing requirements with our team.

The same specification family may cover multiple finishes. Parenthetical alloy, grade, and system qualifiers below are part of the reference.

All listed finish references are shown below.

ASTM International plating specifications

BMW plating specifications

Böllhoff plating specifications

Bosch plating specifications

Delphi Automotive plating specifications

DIN plating specifications

Ford plating specifications

Zinc Nickel plating (ZnNi)

  • WSA-M1P87-A1
  • WSS-M1P87-B4
  • WSS-M21P44-A1
  • WSS-M21P44-A2
  • WSS-M21P44-A3 (ZnNi basecoat)
  • WSS-M21P51-A1 (S450U)
  • WSS-M21P51-A2 (S450)
  • WSS-M21P51-A3 (S450L)
  • WSS-M21P51-A4
  • WSS-M21P51-A5 (S450B)
  • WSS-M21P51-A6 (S450BL)

The specified passivate, sealer, color, and lubricity are part of the coating system. WSS-M21P44 references are legacy drawing requirements; the A3 listing covers the zinc-nickel basecoat, and the required cathodic electrocoat and complete system must be confirmed.

Review Zinc Nickel requirements for Ford

General Motors plating specifications

Honda plating specifications

Hyundai / Kia plating specifications

International / Navistar plating specifications

ISO plating specifications

Mazda plating specifications

Mercedes-Benz plating specifications

Mitsubishi plating specifications

Nissan plating specifications

Rivian plating specifications

SAE International plating specifications

Stellantis (Chrysler / FCA) plating specifications

Tesla plating specifications

Toyota plating specifications

Volkswagen plating specifications

Volvo Cars plating specifications

Volvo Group plating specifications

Volvo Group / Volvo Cars plating specifications

Quote the complete requirement

Start with
your drawing.

Send your part drawing, specification and revision, finish code, coating thickness, color, post-treatment, production volume, and required testing. Identify any customer or OEM approval requirements so our team can review the complete coating system.

Request a specification-based quote

Review testing capabilities · Certificates and laboratory scope