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 delayed or discrete sequential measurement

delayed or discrete sequential measurement of radioactive iodine in all forms

or where people are present at the likely times of risk

for quasi-stereoscopic vision (Type C

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

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 delayed or discrete sequential measurement1 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.