ASTM F1941/F1941M-16
Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric

Standard No.

ASTM F1941/F1941M-16

Release Date

2016

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM F1941/F1941M-16

Scope

1.1 This specification covers application, performance and dimensional requirements for electrodeposited coatings on threaded fasteners with unified inch and metric screw threads, but it may also be applied to other threaded parts and non-threaded parts such as washers and pins. It specifies coating thickness, supplementary hexavalent chromate or non-hexavalent conversion coatings, corrosion resistance, precautions for managing the risk of hydrogen embrittlement and hydrogen embrittlement relief for high-strength and surface-hardened fasteners. It also highlights the differences between barrel and rack plating and makes recommendations as to the applicability of each process.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3 Terms used in this specification are defined in Terminology F1789.

1.4 The following precautionary statement pertains to the test method portion only, Section 9, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM F1941/F1941M-16 Referenced Document

• ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus
• ASTM B487 Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
• ASTM B499 Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
• ASTM B504 Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method
• ASTM B567 Standard Test Method for Measurement of Coating Thickness by the Beta Backscatter Method*， 2024-04-20 Update
• ASTM B568 Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry
• ASTM B633 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel
• ASTM B659 Standard Guide for Measuring Thickness of Metallic and Inorganic Coatings
• ASTM D6492 Standard Practice for Detection of Hexavalent Chromium On Zinc and Zinc/Aluminum Alloy Coated Steel
• ASTM E376 Standard Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Test Methods
• ASTM F1470 Standard Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
• ASTM F1624 Standard Test Method for Measurement of Hydrogen Embrittlement Threshold in Steel by the Incremental Step Loading Technique
• ASTM F1789 Standard Terminology for F16 Mechanical Fasteners
• ASTM F1940 Standard Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
• ASTM F2078 Standard Terminology Relating to Hydrogen Embrittlement Testing
• ASTM F519 Standard Test Method for Mechanical Hydrogen Embrittlement Evaluation of Plating Processes and Service Environments
• ASTM F606/F606M Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
• ASTM F788 Standard Specification for Surface Discontinuities of Bolts, Screws, Studs, and Rivets, Inch and Metric Series
• ISO 4042 Threaded components — Electroplated coatings*， 2024-04-20 Update
• ISO 965-1 ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data — Amendment 1
• ISO 965-2 ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose external and internal screw threads - Medium quality; Amendment 1
• ISO 965-3 ISO general purpose metric screw threads - Tolerances - Part 3: Limit deviations for screw threads

ASTM F1941/F1941M-16 history

• 2016 ASTM F1941/F1941M-16 Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric
• 2015 ASTM F1941/F1941M-15 Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric
• 2010 ASTM F1941-10 Standard Specification for Electrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (UN/UNR))
• 2007 ASTM F1941-07 Standard Specification for Electrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (UN/UNR))
• 2000 ASTM F1941-00(2006) Standard Specification for Electrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (UN/UNR))
• 2000 ASTM F1941-00 Standard Specification for Electrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (UN/UNR))