ASTM F879M-98

Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws [Metric]

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 Two property classes are covered:  
1.2.1 Austenitic Class A1-50 in an annealed condition at 500 MPa minimum, and  
1.2.2 Austenitic Class A1-70 in a cold-worked condition at 700 MPa minimum.
1.3 The following hazard caveat pertains only to Section 12, 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-Oct-2001
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.04 - Nonferrous Fasteners

Relations

• Replaced By: ASTM F879M-01 - Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws [Metric]
• Effective Date: 10-Oct-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 879M – 98
METRIC
Standard Specification for
Stainless Steel Socket Button and Flat Countersunk Head
1
Cap Screws [Metric]
This standard is issued under the fixed designation F 879M; 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 (e) 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 Heat-Resisting, Maraging, and Other Similar Chromium-
5
Nickel-Iron Alloys
1.1 This specification covers the chemical and mechanical
F 606M Test Methods for Determining the Mechanical
requirements for stainless steel metric hexagon socket button
Properties of Externally and Internally Threaded Fasteners,
(SBHCS) and flat countersunk (SFHCS) head cap screws with
6
Washers, and Rivets [Metric]
nominal thread M 3 through M 20 intended for use in applica-
F 738M Specification for Stainless Steel Metric Bolts,
tions requiring general corrosion resistance.
6
Screws, and Studs
1.2 Two property classes are covered:
F 788/F788M Specification for Surface Discontinuities of
1.2.1 Austenitic Class A 1-50 in an annealed condition at
6
Bolts, Screws, and Studs, Inch and Metric Series
500 MPa minimum, and
F 1470 Guide for Fastener Sampling for Specified Mechani-
1.2.2 Austenitic Class A 1-70 in a cold-worked condition at
6
cal Properties and Performance Inspection
700 MPa minimum.
2.2 ANSI/ASME Standards:
1.3 The following hazard caveat pertains only to Section 12,
B 18.3.4M Hexagon Socket Button Head Cap Screws, Met-
Test Methods: This standard does not purport to address all of
7
ric Series
the safety concerns, if any, problems associated with its use. It
B 18.3.5M Hexagon Socket Flat Countersunk Head Cap
is the responsibility of the user of this standard to establish
7
Screws, Metric Series
appropriate safety and health practices and determine the
applicability of regulatory limitations prior to use.
3. Classification
2. Referenced Documents 3.1 The designation of the property class and conditions of
this specification shall be consistent with the stainless steel
2.1 ASTM Standards:
designations in Specification F 738M.
A 262 Practices for Detecting Susceptibility to Intergranu-
2
3.2 The austenitic stainless steel socket screw shall be
lar Attack in Austenitic Stainless Steels
designated F 879M A 1-50 or F 879M A 1-70.
A 342 Test Methods for Permeability of Feebly Magnetic
3
Materials
4. Ordering Information
A 380 Practice for Cleaning and Descaling Stainless Steel
2 4.1 Orders for material under this specification shall include
Parts, Equipment, and Systems
the following information:
A 555/A555M Specification for General Requirements for
2 4.1.1 Quantity (number of pieces of each item).
Stainless and Heat-Resisting Steel Wire and Wire Rods
4.1.2 Name of the screw, SBHCS or SFHCS.
A 751 Test Methods, Practices, and Terminology for
2 4.1.3 Dimensions, including nominal thread designation,
Chemical Analysis of Steel Products
thread pitch, and nominal screw length (millimetres). A stan-
A 967 Specification for Chemical Passivation Treatments
2 dard part number may be used for this definition.
for Stainless Steel Parts
4 4.1.4 Property Class A 1-50 or A 1-70.
D 3951 Practice for Commercial Packaging
4.1.5 Certification, if required (see Section 15).
E 353 Test Methods for Chemical Analysis of Stainless,
4.1.6 ASTM specification and year of issue.
4.1.7 Any special or supplemental requirements (see
1
This specification is under the jurisdiction of ASTM Committee F-16 on
Supplementary Requirements S1 through S3).
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous
Fasteners.
Current edition approved Oct. 10, 1998. Published December 1998. Originally
5
published as F 879 – 84. Last previous edition F 879 – 91. Annual Book of ASTM Standards, Vol 03.05.
2 6
Annual Book of ASTM Standards, Vol 01.03. Annual Book of ASTM Standards, Vol 01.08.
3 7
Annual Book of ASTM Standards, Vol 03.04. Available from American National Standards Institute, 11 West 42nd St., 13th
4
Annual Book of ASTM Standards, Vol 15.09. Floor, New York, NY 10036.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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F 879M
4.2 Government Provisioning — Government procurement 7.3 Screws that are too short (lengths less than specified in
and design-selection criteria shall be specified in accordance 7.2 or that have insufficient threads for tension testing) shall
with ANSI B 18.3.4M or ANSI B 18.3.5M as appropriate. not be subject to tension tests, but shall conform to the
maximum and minimum hardness requirements o
...