1.1This 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.
1.2The following three property classes are covered:
1.2.1Austenitic Class A1-50 in an annealed condition at 585 MPa maximum,
1.2.2Austenitic Class A1–55 in a cold worked condition at 550 MPa minimum, and
1.2.3Austenitic Class A1-70 in a cold-worked condition at 700 MPa minimum.
1.3Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4The following hazard caveat pertains only to Section 12, Test Methods: This standard does not purport to address all of the safety problems, 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.