ASTM F837M-02a

Standard Specification for Stainless Steel Socket Head Cap Screws [Metric]

ABSTRACT
This specification covers stainless steel metric 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 metric socket head cap screws (SHCS) with nominal thread M1.6 through M36 and intended for use in applications requiring general corrosion resistance.  
1.2 Two groups of stainless steel alloys are covered, austenitic Grade A1 and martensitic Grade C1.  
1.3 Three property classes are covered: austenitic A1-50 in an annealed condition at 500 MPa minimum, A1-70 in a cold worked condition at 700 MPa minimum, and martensitic C1-110 in a heat treated condition at 1100 MPa minimum.
1.4 This hazard statement pertains only to Section 13, Test Methods: This standard does not purport to address all of the safety problems 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.

General Information

• Status: Historical
• Publication Date: 09-Jul-2002
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.04 - Nonferrous Fasteners

Relations

• Replaces: ASTM F837M-02 - Standard Specification for Stainless Steel Socket Head Cap Screws [Metric]
• Effective Date: 10-Jul-2002
• Replaced By: ASTM F837M-02a(2010) - Standard Specification for Stainless Steel Socket Head Cap Screws [Metric]
• Effective Date: 01-Oct-2010

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F837M – 02a
Standard Specification for
1
Stainless Steel Socket Head Cap Screws [Metric]
This standard is issued under the fixed designation F837M; 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 Department of Defense.
1. Scope E18 Test Methods for Rockwell Hardness of Metallic Ma-
5
terials
1.1 This specification covers the chemical and mechanical
E92 Test Method for Vickers Hardness of Metallic Materi-
requirements for stainless steel metric socket head cap screws
5
als
(SHCS) with nominal thread M1.6 through M36 and intended
E384 Test Method for Microindentation Hardness of Mate-
for use in applications requiring general corrosion resistance.
6
rials
1.2 Two groups of stainless steel alloys are covered, auste-
F606M Test Methods for Determining the Mechanical
nitic Grade A1 and martensitic Grade C1.
Properties of Externally and InternallyThreaded Fasteners,
1.3 Four property classes are covered: austenitic A1-50 in
6
Washers, and Rivets (Metric)
an annealed condition at 585 MPa maximum; austeniticA1–55
F738M Specification for Stainless Steel Metric Bolts,
in a cold worked condition at 550 MPa minimum; austenitic
6
Screws, and Studs
A1-70 in a cold worked condition at 700 MPa minimum, and
F1470 Practice for Fastener Sampling for Specified Me-
martensitic C1-110 in a heat treated condition at 1100 MPa
chanical Properties and Performance Inspection
minimum.
2.2 ASME Standard:
1.4 This hazard statement pertains only to Section 13, Test
ASME B 18.3.1M Socket Head Cap Screws (Metric Se-
Methods: This standard does not purport to address all of the
7
ries)
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Classification
priate safety and health practices and determine the applica-
3.1 The designation of the property class for the two
bility of regulatory limitations prior to use.
materialsandconditionsofthisspecificationshallbeconsistent
2. Referenced Documents with the stainless steel designations in Specification F738M.
2
3.2 Theausteniticstainlesssteelsocketheadcapscrewshall
2.1 ASTM Standards:
be designated F837MA1-50, F837MA1-55, or F837MA1-70.
A262 Practices for Detecting Susceptibility to Intergranular
3 3.3 The martensitic stainless steel socket head cap screw
Attack in Austenitic Stainless Steels
shall be designated F837M C1-110.
A342/A342M Test Methods for Permeability of Feebly
2
Magnetic Materials
4. Ordering Information
A380 Practice for Cleaning, Descaling, and Passivation of
2 4.1 Orders for socket head cap screws under this specifica-
Stainless Steel Parts, Equipment, and Systems
tion shall include:
A751 Test Methods, Practices, andTerminology for Chemi-
2 4.1.1 Quantity (number of pieces of each item),
cal Analysis of Steel Products
4.1.2 Name of the item (socket head cap screws, SHCS),
A967 Specification for Chemical Passivation Treatments
4 4.1.3 Size (nominal diameter, thread pitch, thread class,
for Stainless Steel Parts
5 screw length) or part number,
D3951 Practice for Commercial Packaging
4.1.4 Property class (A1-50, A1–55, A1-70, or C1-110),
4.1.5 ASTM specification and date of issue. When date of
issue is not specified, fasteners shall be furnished to the latest
1
This specification is under the jurisdiction of ASTM Committee F16 on
issue,
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous
4.1.6 Supplementary requirements, if any (see S1 through
Fasteners.
Current edition approved June 10, 2002. Published September 2002. Originally S3),
published as F837M – 83. Last previous edition F837M – 02. DOI: 10.1520/
F0837M-02A.
2
Annual Book of ASTM Standards, Vol 01.03.
3 6
Annual Book of ASTM Standards, Vol 03.04. Annual Book of ASTM Standards, Vol 01.08.
4 7
Annual Book of ASTM Standards, Vol 15.09. Available from Global Engineering Documents, 15 InvernessWay, Englewood,
5
Annual Book of ASTM Standards, Vol 03.01. CO 80112.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F837M – 02a
4.1.7 Additional special requirements, if any, to be specified quenching, reheating to 275°C minimum and holding for at
on the purchase order: least1handthenaircoolingtoprovidethepropertiesspecified
4.1.7.1 Forming (see 5.1), in Table 1.
4.1.7.2 Threading (see 5.2),
7. Chemical Composition
4.1.7.3 Surface finish (see 11.1),
7.1 It is the intent of this specification that screws shall be
4.1.7.4 Alloy selection (see 7.
...