ASTM A490M-09a

ASTM A490M-09a Standard Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel Joints (Metric) ASTM International / 01-Nov-2009 / 6 pages 1.1 This specification covers two types of quenched and tempered alloy steel, metric heavy hex...