ASTM F879M-16
(Specification)Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws (Metric) (Withdrawn 2023)
Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws (Metric) (Withdrawn 2023)
ABSTRACT
This specification covers the chemical and mechanical requirements for stainless steel metric hexagon socket button (SBHCS) and flat countersunk (SFHCS) head cap screws with nominal thread M 3 through M 20 intended for use in applications requiring general corrosion resistance. These steels are designated into three classes: Austenitic Class A 1-50 in an annealed condition, Austenitic Class A1-55 in a cold worked condition, and Austenitic Class A 1-70 in a cold worked condition. The austenitic stainless steel socket screw shall be designated F879M A1-50, F879M A1–55, or F 879M A1-70. Screws shall be formed by upsetting or extruding, or both. Also, these screws shall be roll threaded. Austenitic alloys ClassA 1-50 screws, following manufacture, shall be annealed by heating to a certain temperature to obtain maximum corrosion resistance and minimum permeability. The screws shall be held for a sufficient time at temperature, then cooled at a rate sufficient to prevent precipitation of the carbide and provide the properties specified. Different tests shall be conducted in order to determine the following mechanical properties of screws: tensile strength, minimum extension, yield strength, elongation, Vickers hardness, and Rockwell hardness.
SCOPE
1.1 This specification covers the chemical and mechanical requirements for stainless steel metric hexagon socket button (SBHCS) and flat countersunk (SFHCS) head cap screws with nominal thread M 3 through M 20 intended for use in applications requiring general corrosion resistance.
1.2 The following three property classes are covered:
1.2.1 Austenitic Class A1-50 in an annealed condition at 585 MPa maximum,
1.2.2 Austenitic Class A1–55 in a cold worked condition at 550 MPa minimum, and
1.2.3 Austenitic Class A1-70 in a cold-worked condition at 700 MPa minimum.
1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 The following hazard caveat pertains only to Section 12, Test Methods: This standard does not purport to address all of the safety problems, 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.
WITHDRAWN RATIONALE
This specification covered the chemical and mechanical requirements for stainless steel metric hexagon socket button (SBHCS) and flat countersunk (SFHCS) head cap screws with nominal thread M 3 through M 20 intended for use in applications requiring general corrosion resistance.
Formerly under the jurisdiction of Committee F16 on Fasteners, this specification was withdrawn in November 2023. This standard is being withdrawn without replacement because these products are better covered by ISO 3506-1.
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Standards Content (Sample)
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.
Designation:F879M −16
Standard Specification for
Stainless Steel Socket Button and Flat Countersunk Head
1
Cap Screws (Metric)
This standard is issued under the fixed designation F879M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* A262Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels
1.1 This specification covers the chemical and mechanical
A342/A342MTest Methods for Permeability of Weakly
requirements for stainless steel metric hexagon socket button
Magnetic Materials
(SBHCS) and flat countersunk (SFHCS) head cap screws with
A380/A380MPractice for Cleaning, Descaling, and Passi-
nominal thread M3 through M20 intended for use in applica-
vation of Stainless Steel Parts, Equipment, and Systems
tions requiring general corrosion resistance.
A555/A555MSpecification for General Requirements for
1.2 The following three property classes are covered:
Stainless Steel Wire and Wire Rods
1.2.1 Austenitic Class A1-50 in an annealed condition at
A751Test Methods, Practices, and Terminology for Chemi-
585 MPa maximum,
cal Analysis of Steel Products
1.2.2 Austenitic Class A1-55 in a cold worked condition at
A967/A967MSpecification for Chemical Passivation Treat-
550 MPa minimum, and
ments for Stainless Steel Parts
1.2.3 Austenitic ClassA1-70 in a cold-worked condition at
D3951Practice for Commercial Packaging
700 MPa minimum.
E18Test Methods for Rockwell Hardness of Metallic Ma-
1.3 Units—The values stated in SI units are to be regarded terials
E92Test Methods for Vickers Hardness and Knoop Hard-
asstandard.Nootherunitsofmeasurementareincludedinthis
standard. ness of Metallic Materials
E384Test Method for Microindentation Hardness of Mate-
1.4 ThefollowinghazardcaveatpertainsonlytoSection12,
rials
Test Methods: This standard does not purport to address all of
F606MTest Methods for Determining the Mechanical Prop-
the safety concerns, if any, associated with its use. It is the
erties of Externally and Internally Threaded Fasteners,
responsibility of the user of this standard to establish appro-
Washers, and Rivets (Metric)
priate safety, health, and environmental practices and deter-
F738M Specification for Stainless Steel Metric Bolts,
mine the applicability of regulatory limitations prior to use.
3
Screws, and Studs (Withdrawn 2014)
1.5 This international standard was developed in accor-
F788Specification for Surface Discontinuities of Bolts,
dance with internationally recognized principles on standard-
Screws, and Studs, Inch and Metric Series
ization established in the Decision on Principles for the
F1470Practice for Fastener Sampling for Specified Me-
Development of International Standards, Guides and Recom-
chanical Properties and Performance Inspection
mendations issued by the World Trade Organization Technical
4
2.2 ISO Standards:
Barriers to Trade (TBT) Committee.
ISO 7380–1Button head screws-Part 1: Hexagon socket
button head screws
2. Referenced Documents
ISO 10642Hexagon socket countersunk head screws
2
2.1 ASTM Standards:
3. Classification
3.1 The designation of the property class and conditions of
1
This specification is under the jurisdiction of ASTM Committee F16 on
this specification shall be consistent with the stainless steel
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous
designations in Specification F738M.
Fasteners.
CurrenteditionapprovedMay1,2016.PublishedJuly2016.Originallyapproved
in 1984. Last previous edition approved in 2015 as F879M–02a(2015). DOI:
3
10.1520/F0879M-16. The last approved version of this historical standard is referenced on
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.astm.org.
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from International Organization for Standardization (ISO), ISO
Standards volume information, refer to the standard’s Document Summary page on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
the ASTM website. Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F879M−16
3.2 The austenitic stainless steel socket screw shall be orderandshallhaveachemicalcompositionconformingtothe
designated F879M A1-50
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F879M − 02a (Reapproved 2015) F879M − 16
Standard Specification for
Stainless Steel Socket Button and Flat Countersunk Head
1
Cap Screws (Metric)
This standard is issued under the fixed designation F879M; 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 Scope*
1.1 This specification covers the chemical and mechanical requirements for stainless steel metric hexagon socket button
(SBHCS) and flat countersunk (SFHCS) head cap screws with nominal thread M 3 through M 20 intended for use in applications
requiring general corrosion resistance.
1.2 The following three property classes are covered:
1.2.1 Austenitic Class A1-50 in an annealed condition at 585 MPa maximum,
1.2.2 Austenitic Class A1–55 in a cold worked condition at 550 MPa minimum, and
1.2.3 Austenitic Class A1-70 in a cold-worked condition at 700 MPa minimum.
1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.4 The following hazard caveat pertains only to Section 12, Test Methods:This standard does not purport to address all of the
safety problems, 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A342/A342M Test Methods for Permeability of Weakly Magnetic Materials
A380A380/A380M Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems
A555/A555M Specification for General Requirements for Stainless Steel Wire and Wire Rods
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A967A967/A967M Specification for Chemical Passivation Treatments for Stainless Steel Parts
D3951 Practice for Commercial Packaging
E18 Test Methods for Rockwell Hardness of Metallic Materials
E92 Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials
E384 Test Method for Microindentation Hardness of Materials
F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, and
Rivets (Metric)
3
F738M Specification for Stainless Steel Metric Bolts, Screws, and Studs (Withdrawn 2014)
F788/F788MF788 Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series
F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
4
2.2 ASMEISO Standards:
B 18.3.4MISO 7380–1 Hexagon Socket Button Head Cap Screws (Metric Series)Button head screws-Part 1: Hexagon socket
button head screws
1
This specification is under the jurisdiction of ASTM Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous Fasteners.
Current edition approved Sept. 1, 2015May 1, 2016. Published November 2015July 2016. Originally approved in 1984. Last previous edition approved in 20082015 as
F879 – 02aF879M – 02a(2008).(2015). DOI: 10.1520/F0879M-02AR15.10.1520/F0879M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from Global Engineering Documents, 15 Inverness Way, East Englewood, CO 80112-5704, http://www.global.ihs.com.International Organization for
Standardization (ISO), ISO Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F879M − 16
B 18.3.5MISO 10642 Hexagon Socket Flat Countersunk Head Cap Screws (Metric Series)socket countersunk head screws
3. Classification
3.1 The designation of the property class and conditions of this specification shall be consistent with the stainless steel
d
...
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: F879M − 16
Standard Specification for
Stainless Steel Socket Button and Flat Countersunk Head
1
Cap Screws (Metric)
This standard is issued under the fixed designation F879M; 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* A262 Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels
1.1 This specification covers the chemical and mechanical
A342/A342M Test Methods for Permeability of Weakly
requirements for stainless steel metric hexagon socket button
Magnetic Materials
(SBHCS) and flat countersunk (SFHCS) head cap screws with
A380/A380M Practice for Cleaning, Descaling, and Passi-
nominal thread M 3 through M 20 intended for use in applica-
vation of Stainless Steel Parts, Equipment, and Systems
tions requiring general corrosion resistance.
A555/A555M Specification for General Requirements for
1.2 The following three property classes are covered:
Stainless Steel Wire and Wire Rods
1.2.1 Austenitic Class A1-50 in an annealed condition at
A751 Test Methods, Practices, and Terminology for Chemi-
585 MPa maximum,
cal Analysis of Steel Products
1.2.2 Austenitic Class A1-55 in a cold worked condition at
A967/A967M Specification for Chemical Passivation Treat-
550 MPa minimum, and
ments for Stainless Steel Parts
1.2.3 Austenitic Class A1-70 in a cold-worked condition at
D3951 Practice for Commercial Packaging
700 MPa minimum.
E18 Test Methods for Rockwell Hardness of Metallic Ma-
terials
1.3 Units—The values stated in SI units are to be regarded
as standard. No other units of measurement are included in this E92 Test Methods for Vickers Hardness and Knoop Hard-
ness of Metallic Materials
standard.
E384 Test Method for Microindentation Hardness of Mate-
1.4 The following hazard caveat pertains only to Section 12,
rials
Test Methods: This standard does not purport to address all of
F606M Test Methods for Determining the Mechanical Prop-
the safety concerns, if any, associated with its use. It is the
erties of Externally and Internally Threaded Fasteners,
responsibility of the user of this standard to establish appro-
Washers, and Rivets (Metric)
priate safety, health, and environmental practices and deter-
F738M Specification for Stainless Steel Metric Bolts,
mine the applicability of regulatory limitations prior to use.
3
Screws, and Studs (Withdrawn 2014)
1.5 This international standard was developed in accor-
F788 Specification for Surface Discontinuities of Bolts,
dance with internationally recognized principles on standard-
Screws, and Studs, Inch and Metric Series
ization established in the Decision on Principles for the
F1470 Practice for Fastener Sampling for Specified Me-
Development of International Standards, Guides and Recom-
chanical Properties and Performance Inspection
mendations issued by the World Trade Organization Technical
4
2.2 ISO Standards:
Barriers to Trade (TBT) Committee.
ISO 7380–1 Button head screws-Part 1: Hexagon socket
button head screws
2. Referenced Documents
ISO 10642 Hexagon socket countersunk head screws
2
2.1 ASTM Standards:
3. Classification
3.1 The designation of the property class and conditions of
1
This specification is under the jurisdiction of ASTM Committee F16 on
this specification shall be consistent with the stainless steel
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous
designations in Specification F738M.
Fasteners.
Current edition approved May 1, 2016. Published July 2016. Originally approved
in 1984. Last previous edition approved in 2015 as F879M – 02a(2015). DOI:
3
10.1520/F0879M-16. The last approved version of this historical standard is referenced on
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.astm.org.
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from International Organization for Standardization (ISO), ISO
Standards volume information, refer to the standard’s Document Summary page on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
the ASTM website. Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F879M − 16
3.2 The austenitic stainless steel socket screw shall be order and shall have a chemical composition conforming to the
designated F879M A1-50, F879M A1-55, or F879M A1-70. limits specified in Table 2.
6.3 When chemical an
...
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