ASTM F879-02a

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

SCOPE
1.1 This specification covers the chemical and mechanical requirements for stainless steel inch hexagon socket button (SBHCS) and flat countersunk (SFHCS) head cap screws with nominal thread 0.060 through 0.625 in. intended for use in applications requiring general corrosion resistance.
1.2 The following three conditions are covered:
1.2.1 Austenitic alloy group 1 AF in an annealed condition at 85 ksi maximum,
1.2.2 Austenitic alloy group 1 CW in a cold-worked condition at 80 ksi minimum, and
1.2.3 Austenitic alloy group 1 condition CW1 in a cold worked condition at 102 ksi minimum.
1.3 The following precautionary caveat pertains only to the test method portion, Section 12, 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

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

Relations

• Replaces: ASTM F879-02 - Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
• Effective Date: 10-Oct-2002
• Replaced By: ASTM F879-02a(2008) - Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
• Effective Date: 01-May-2008
• Referred By: ASTM C1921/C1921M-22 - Standard Test Method for Comparative Impact Testing of Gypsum Panel Outside 90° Corner Systems
• Effective Date: 10-Oct-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F 879 – 02a
Standard Specification for
Stainless Steel Socket Button and Flat Countersunk Head
1
Cap Screws
This standard is issued under the fixed designation F 879; 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.
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1. Scope Chemical Analysis of Steel Products
A 967 Specification for Chemical Passivation Treatments
1.1 This specification covers the chemical and mechanical
2
for Stainless Steel Parts
requirements for stainless steel inch hexagon socket button
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D 3951 Practice for Commercial Packaging
(SBHCS) and flat countersunk (SFHCS) head cap screws with
E 18 Test Methods for Rockwell Hardness and Rockwell
nominal thread 0.060 through 0.625 in. intended for use in
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Superficial Hardness of Metallic Materials
applications requiring general corrosion resistance.
E 92 Test Method for Vickers Hardness of Metallic Mate-
1.2 The following three conditions are covered:
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rials
1.2.1 Austenitic alloy group 1 AF in an annealed condition
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E 384 Test Method for Microhardness of Materials
at 85 ksi maximum,
F 593 Specification for Stainless Steel Bolts, Hex Cap,
1.2.2 Austenitic alloy group 1 CW in a cold-worked condi-
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Screws, and Studs
tion at 80 ksi minimum, and
F 606 Test Methods for Determining the Mechanical Prop-
1.2.3 Austenitic alloy group 1 condition CW1 in a cold
erties of Externally and Internally Threaded Fasteners,
worked condition at 102 ksi minimum.
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Washers, and Rivets
1.3 The following precautionary caveat pertains only to the
F 788/F 788M Specification for Surface Discontinuities of
test method portion, Section 12, of this specification: This
6
Bolts, Screws, and Studs, Inch and Metric Series
standard does not purport to address all of the safety concerns,
F 1470 GuideforFastenerSamplingforSpecifiedMechani-
if any, associated with its use. It is the responsibility of the user
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cal Properties and Performance Inspection
of this standard to establish appropriate safety and health
2.2 ASME Standard:
practices and determine the applicability of regulatory limita-
7
B 18.3 Socket Cap, Shoulder and Set Screws (Inch Series)
tions prior to use.
3. Classification
2. Referenced Documents
3.1 The designation of the alloy group and condition of this
2.1 ASTM Standards:
specification shall be consistent with the stainless steel desig-
A 262 Practices for Detecting Susceptibility to Intergranu-
2
nations in Specification F 593.
lar Attack in Austenitic Stainless Steels
3.2 The austenitic stainless steel socket screw shall be
A 342 Test Methods for Permeability of Feebly Magnetic
3
designated F 879 Group 1 Condition AF, F 879 Group 1
Materials
Condition CW, or F879 Group 1 Condition CW1.
A 380 Practice for Cleaning, Descaling, and Passivation of
2
Stainless Steel Parts, Equipment, and Systems
4. Ordering Information
A 555/A555M Specification for General Requirements for
2 4.1 Orders for material under this specification shall include
Stainless Steel Wire and Wire Rods
the following information:
A 751 Test Methods, Practices, and Terminology for
4.1.1 Quantity (number of pieces of each item).
4.1.2 Name of the screw, SBHCS or SFHCS.
1
This specification is under the jurisdiction of ASTM Committee F16 on
Fasteners and is the direct responsibility of Subcommittee F16.04 on Nonferrous
4
Fasteners. Annual Book of ASTM Standards, Vol 15.09.
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Current edition approved Oct. 10, 2002. Published November 2002. Originally Annual Book of ASTM Standards, Vol 03.01.
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published as F 879 – 86. Last previous edition F 879 – 02. Annual Book of ASTM Standards, Vol 01.08.
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Annual Book of ASTM Standards, Vol 01.03. Available from Global Engineering Documents, 15 Inverness Way East,
3
Annual Book of ASTM Standards, Vol 03.04. Englewood, CO 80112.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F 879 – 02a
4.1.3 Dimensions, including nominal thread designation, 7. Mechanical Properties
thread pitch, and nominal screw length (inches). A standard
7.1 The finished screws shall conform to the mechanical
part number may be used for this definition.
requirements specified in Table 1.
4.1.4 Alloy group and condition (Group 1AF, Group 1 CW,
7.2 Screws having a nominal length equal to or greater than
Group 1 CW1).
three diameters shall be tensile tested full size and shall meet
4.1.5 Certification, if required (see Section 15).
the full size breaking strength requirements specified in Table
4.1.6 ASTM specification and year of
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