ASTM F837-20

Standard Specification for Stainless Steel Socket Head Cap Screws

ABSTRACT
This specification covers stainless steel socket head cap screws (SHCS) intended for use in applications requiring general corrosion resistance. Two groups of stainless steel alloys are covered, austenitic Grade A1 and martensitic Grade C1. Four property classes are covered: austenitic A1-50 in an annealed condition; austenitic A1-55 in a cold worked condition; austenitic A1-70 in a cold worked condition, and martensitic C1-110 in a heat treated condition. Materials shall be tested and the individual grades shall conform to forging; threads; heat treatment; chemical composition; mechanical properties such as thread diameter, tensile strength, yield strength, elongation, core hardness (Vickers and Rockwell); and corrosion resistance values. Workmanship, finish, and appearance are also detailed.
SCOPE
1.1 This specification covers the chemical and mechanical requirements for stainless steel inch socket head cap screw (SHCS) with nominal thread 0.060 through 1.500 in. and intended for use in applications requiring general corrosion resistance.  
1.2 Three groups of stainless steel alloys are covered, austenitic Group 1 and 2 and martensitic Group 5.  
1.3 Four property conditions are covered: austenitic Alloy Groups 1 and 2 in an annealed condition (AF) at 85 ksi maximum, in two cold worked conditions (CW) at 80 ksi minimum, (CW1) at 102 ksi minimum, and martensitic Alloy Group 5 in a heat treated condition (HT) at 160 ksi minimum.  
1.4 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 The following precautionary caveat pertains only to the test method portion, Section 13, 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, 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: Published
• Publication Date: 30-Apr-2020
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.04 - Nonferrous Fasteners

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:F837 −20
Standard Specification for
1
Stainless Steel Socket Head Cap Screws
ThisstandardisissuedunderthefixeddesignationF837;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers the chemical and mechanical
A262Practices for Detecting Susceptibility to Intergranular
requirements for stainless steel inch socket head cap screw
Attack in Austenitic Stainless Steels
(SHCS) with nominal thread 0.060 through 1.500 in. and
A342/A342MTest Methods for Permeability of Weakly
intended for use in applications requiring general corrosion
Magnetic Materials
resistance.
A380Practice for Cleaning, Descaling, and Passivation of
1.2 Three groups of stainless steel alloys are covered,
Stainless Steel Parts, Equipment, and Systems
austenitic Group 1 and 2 and martensitic Group 5.
A555/A555MSpecification for General Requirements for
Stainless Steel Wire and Wire Rods
1.3 Four property conditions are covered: austenitic Alloy
A751Test Methods, Practices, and Terminology for Chemi-
Groups 1 and 2 in an annealed condition (AF) at 85 ksi
cal Analysis of Steel Products
maximum, in two cold worked conditions (CW) at 80 ksi
A967Specification for Chemical PassivationTreatments for
minimum, (CW1) at 102 ksi minimum, and martensitic Alloy
Stainless Steel Parts
Group 5 in a heat treated condition (HT) at 160 ksi minimum.
D3951Practice for Commercial Packaging
E18Test Methods for Rockwell Hardness of Metallic Ma-
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
terials
asstandard.Nootherunitsofmeasurementareincludedinthis
E92Test Methods for Vickers Hardness and Knoop Hard-
standard.
ness of Metallic Materials
1.5 The following precautionary caveat pertains only to the
E384Test Method for Microindentation Hardness of Mate-
test method portion, Section 13, of this specification: This
rials
standard does not purport to address all of the safety concerns,
F606Test Methods for Determining the Mechanical Proper-
if any, associated with its use. It is the responsibility of the user
ties of Externally and Internally Threaded Fasteners,
of this standard to establish appropriate safety, health, and
Washers, and Rivets (Metric) F0606_F0606M
environmental practices and determine the applicability of
F788/F788MSpecification for Surface Discontinuities of
regulatory limitations prior to use.
Bolts, Screws, and Studs, Inch and Metric Series
F1470Practice for Fastener Sampling for Specified Me-
1.6 This international standard was developed in accor-
chanical Properties and Performance Inspection
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
2.2 ASME Standard:
Development of International Standards, Guides and Recom- ASME B18.3Socket Cap, Shoulder, and Set Screws—Inch
3
mendations issued by the World Trade Organization Technical Series
4
Barriers to Trade (TBT) Committee.
2.3 JIS Standard:
3
JIS G 4311Heat Resisting Steel Bar and Wire Rods
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
1
This specification is under the jurisdiction of ASTM Committee F16 on the ASTM website.
3
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous Available from American Society of Mechanical Engineers (ASME), ASME
Fasteners. International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
Current edition approved May 1, 2020. Published May 2020. Originally www.asme.org.
4
approvedin1988.Lastpreviouseditionapprovedin2018asF837–13(2018).DOI: AvailablefromJapaneseStandardsAssociation(JSA),MitaMTBldg.,3-13-12
10.1520/F0837-20. Mita, Minato-ku, Tokyo 108-0073, Japan, http://www.jsa.or.jp.
*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 ----------------------
F837−20
3. Classification 5.2 Threads—Unlessotherwisespecified,screwsinsizesup
to 1.00 in. inclusive and product lengths up to 6 in. inclusive,
3.1 Theausteniticstainlesssteelsocketheadcapscrewshall
shall have threads formed by rolling, except by special agree-
be desig
...

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: F837 − 13 (Reapproved 2018) F837 − 20
Standard Specification for
1
Stainless Steel Socket Head Cap Screws
This standard is issued under the fixed designation F837; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers the chemical and mechanical requirements for stainless steel inch socket head cap screw (SHCS)
with nominal thread 0.060 through 1.500 in. and intended for use in applications requiring general corrosion resistance.
1.2 Three groups of stainless steel alloys are covered, austenitic Group 1 and 2 and martensitic Group 5.
1.3 Four property conditions are covered: austenitic Alloy Groups 1 and 2 in an annealed condition (AF) at 85 ksi maximum,
in two cold worked conditions (CW) at 80 ksi minimum, (CW1) at 102 ksi minimum, and martensitic Alloy Group 5 in a heat
treated condition (HT) at 160 ksi minimum.
1.4 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this
standard.
1.5 The following precautionary caveat pertains only to the test method portion, Section 13, 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, 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.
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
A380 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
A967 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
F606 Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, and
Rivets (Metric) F0606_F0606M
F788/F788M 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
2.2 ASME Standard:
3
ASME B18.3 Socket Cap, Shoulder, and Set Screws—Inch Series
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, 2018May 1, 2020. Published September 2018May 2020. Originally approved in 1988. Last previous edition approved in 20132018 as
ɛ1
F837 – 13 .(2018). DOI: 10.1520/F0837-13R18.10.1520/F0837-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.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 ----------------------
F837 − 20
4
2.3 JIS Standard:
3
JIS G 4311 Heat Resisting Steel Bar and Wire Rods
3. Classification
3.1 The austenitic stainless steel socket head cap screw shall be designated F837 Group 1 or
...