1.1 This specification covers a precipitation hardening bolting material (UNS N07718) for high temperature service.1.2 This specification is expressed in both inch-pound and in SI units. However, unless the order specifies the applicable "M" designation (SI units), the material shall be furnished to inch-pound units.1.3 The values stated in either inch-pounds or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values st