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 Surface conditions include imperfections for

Surface conditions include imperfections for long products

or where people are present at the likely times of risk

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

BS EN 4127 is a European standard on hexagonal head bolts that discusses the criteria for the workability of the bolt

an automation environment

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 Surface conditions include imperfections for1 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.