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ASTM F3393-20

(Specification)

Standard Specification for Zinc-Flake Coating Systems for Fasteners

Standard Specification for Zinc-Flake Coating Systems for Fasteners

SCOPE
1.1 Zinc-flake coating systems are fluid dispersions of zinc-flakes, sometimes with the addition of aluminum flakes, which are non-electrolytically applied to steel substrates. The zinc-flake coating system shall be supplied without hexavalent chromium and can be water based or solvent based systems. Cohesion among the zinc-flakes and adhesion to the steel substrate is achieved through a matrix that is formed during the curing process.  
1.2 This specification covers the classification, performance, and basic requirements for non-electrolytically applied zinc-flake coatings on unified inch and metric series threaded fasteners with minimum nominal diameters of 0.250 in. for inch series and 6 mm for metric.  
1.3 This standard is a consolidation and replacement of three ASTM standards: Specifications F1136/F1136M, F2833, and F3019/F3019M.  
1.4 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Historical
Publication Date
30-Jun-2020
ICS
21.060.01 - Fasteners in general
25.220.40 - Metallic coatings
Technical Committee
F16 - Fasteners
Drafting Committee
F16.03 - Coatings on Fasteners
Current Stage
Ref Project

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ASTM F3393-20 - Standard Specification for Zinc-Flake Coating Systems for FastenersASTM F3393-20 - Standard Specification for Zinc-Flake Coating Systems for Fasteners
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ASTM F3393-20 - Standard Specification for Zinc-Flake Coating Systems for Fasteners
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F3393 −20
Standard Specification for
1
Zinc-Flake Coating Systems for Fasteners
This standard is issued under the fixed designation F3393; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 Zinc-flake coating systems are fluid dispersions of
B117 Practice for Operating Salt Spray (Fog) Apparatus
zinc-flakes, sometimes with the addition of aluminum flakes,
B487 Test Method for Measurement of Metal and Oxide
which are non-electrolytically applied to steel substrates. The
Coating Thickness by Microscopical Examination of
zinc-flake coating system shall be supplied without hexavalent
Cross Section
chromium and can be water based or solvent based systems.
B499 Test Method for Measurement of Coating Thicknesses
Cohesion among the zinc-flakes and adhesion to the steel
by the Magnetic Method: Nonmagnetic Coatings on
substrateisachievedthroughamatrixthatisformedduringthe
Magnetic Basis Metals
curing process.
B568 Test Method for Measurement of Coating Thickness
1.2 This specification covers the classification, by X-Ray Spectrometry
D610 Practice for Evaluating Degree of Rusting on Painted
performance, and basic requirements for non-electrolytically
Steel Surfaces
applied zinc-flake coatings on unified inch and metric series
D3359 Test Methods for Rating Adhesion by Tape Test
threaded fasteners with minimum nominal diameters of 0.250
E376 Practice for Measuring Coating Thickness by
in. for inch series and 6 mm for metric.
Magnetic-Field or Eddy Current (Electromagnetic) Test-
1.3 This standard is a consolidation and replacement of
ing Methods
three ASTM standards: Specifications F1136/F1136M, F2833,
F606/F606M Test Methods for Determining the Mechanical
and F3019/F3019M.
Properties of Externally and Internally Threaded
Fasteners, Washers, Direct Tension Indicators, and Rivets
1.4 Units—The values stated in either SI units or inch-
F788 Specification for Surface Discontinuities of Bolts,
pound units are to be regarded separately as standard. The
Screws, Studs, and Rivets, Inch and Metric Series
values stated in each system are not necessarily exact equiva-
F1136/F1136M Specification for Zinc/Aluminum Corrosion
lents; therefore, to ensure conformance with the standard, each
Protective Coatings for Fasteners
system shall be used independently of the other, and values
F1470 Practice for Fastener Sampling for Specified Me-
from the two systems shall not be combined.
chanical Properties and Performance Inspection
1.5 This standard does not purport to address all of the F1624 Test Method for Measurement of Hydrogen Em-
safety concerns, if any, associated with its use. It is the brittlement Threshold in Steel by the Incremental Step
Loading Technique
responsibility of the user of this standard to establish appro-
F1789 Terminology for F16 Mechanical Fasteners
priate safety, health, and environmental practices and deter-
F1940 Test Method for Process Control Verification to
mine the applicability of regulatory limitations prior to use.
Prevent Hydrogen Embrittlement in Plated or Coated
1.6 This international standard was developed in accor-
Fasteners
dance with internationally recognized principles on standard-
F2833 Specification for Corrosion Protective Fastener Coat-
ization established in the Decision on Principles for the
ings with Zinc Rich Base Coat and Aluminum Organic/
Development of International Standards, Guides and Recom-
Inorganic Type
mendations issued by the World Trade Organization Technical
F3019/F3019M Specification for Chromium Free Zinc-
Barriers to Trade (TBT) Committee.
Flake Composite, with or without Integral Lubricant,
Corrosion Protective Coatings for Fasteners
1
This specification is under the jurisdiction of ASTM Committee F16 on
2
Fasteners and is the direct responsibility of Subcommittee F16.03 on Coatings on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Fasteners. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 1, 2020. Published July 2020. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
F3393–20 the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F3393−20
TABLE 2 Appearance
F3125/F3125M Specification for High Strength Structural
BoltsandAssemblies,SteelandAlloySteel,HeatTreated, Classification Appearance
Code
Inch Dimensions 120 ksi and 150 ksi Minimum Tensile
1 Silver / Gr
...

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