Aerospace series. Bolts with double hexagon head, relieved shank, long thread, in heat resisting steel FE-PM 38 (FV 535). Classification: 1000 MPa/550 °C subscription-only or where people are present

or where people are present at the likely times of risk

temperature susceptibility

It deals with safety requirements for storage and the high pressure piping system from storage to the gas control unit or pressure regulator equipment

It has broad relevance to projects in many industries and the public sector

1:1983 and BS 5400-9

Aerospace series. Bolts with double hexagon head, relieved shank, long thread, in heat resisting steel FE-PM 38 (FV 535). Classification: 1000 MPa/550 °C subscription-only or where people are present1 Scope This standard specifies the characteristics of double hexagon head bolts with relieved shank and long thread in heat resisting steel FM PM 38, tensile strength class 1 000 MPa at room temperature. The maximum test temperature of the material is 550 C. These bolts are to be used in aerospace fastening systems, of parts made in titanium, mainly stressed in tension.