ASTM F879-15 PDF

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 Two groups of austenitic stainless steel alloys and three conditions are covered. See Table 1 and Table 2.

(A) Actual full-size testing of condition CW and CW1 may result in decreased tensile strength because of the head configuration (see Table 3). For fasteners with nominal thread diameters larger than 0.625 in., the mechanical properties shall be agreed upon between the user and manufacturer.
(B) Core hardness is only required when full-size product testing cannot be accomplished.
(C) D denotes nominal thread size.

(A) 304J3 from JIS G 4309.

1.3 Units—The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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.

ASTM F879-15 Referenced Document

ASTM A262 Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
ASTM A342/A342M Standard Test Methods for Permeability of Feebly Magnetic Materials
ASTM A380/A380M Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems*， 2024-04-20 Update
ASTM A555/A555M Standard Specification for General Requirements for Stainless Steel Wire and Wire Rods
ASTM A751 Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
ASTM A967/A967M Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts*， 2024-04-20 Update
ASTM D3951 Standard Practice for Commercial Packaging
ASTM E18 Standard Test Methods for Rockwell Hardness of Metallic Materials
ASTM E384 Standard Test Method for Microindentation Hardness of Materials
ASTM E92 Standard Test Method for Vickers Hardness of Metallic Materials
ASTM F1470 Standard Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
ASTM F593 Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs
ASTM F606/F606M Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
ASTM F788 Standard Specification for Surface Discontinuities of Bolts, Screws, Studs, and Rivets, Inch and Metric Series
JIS G 4309 Stainless steel wires

2023 ASTM F879-23 Standard Specification for Stainless Steel Socket Button, Low and Flat Countersunk Head Cap Screws
2020 ASTM F879-15(2020) Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
2015 ASTM F879-15 Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
2012 ASTM F879-12 Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
2010 ASTM F879-10 Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
2008 ASTM F879-02a(2008) Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
2002 ASTM F879-02a Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
2002 ASTM F879-02 Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
2001 ASTM F879-01 Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
1998 ASTM F879-98 Standard Specification for Stainless Steel Socket Button and Flat Countersunk Head Cap Screws