This SAE Aerospace Information Report (AIR) includes general design information on materials, procurement specifications, and mechanical properties for bolts and screws developed for use on aerospace propulsion systems. Both inch and metric (SI) designs are included.
This standard provides the following: a Definition of terms pertaining to marking. b Symbols for marking location. c Requirements and restrictions for permanent markings. d Types of marking methods. e Rules for designating marking methods. f Table listing marking methods.
This specification covers bolts and screws made from a corrosion and heat resistant, martensitic iron base alloy of the type identified under the Unified Numbering System as UNS S17400. The following specification designations and their properties are covered: