BS EN 3912:2007

This standard BS EN 3912:2007 Aerospace series. Bolts, pan head, six lobe recess, relieved shank, long thread, in heat resisting steel FE-PA2601 (FE-PA92HT, A286), silver plated. Classification: 1100 MPa (at ambient temperature) / 650°C is classified in these ICS categories:

• 49.030.20 Bolts, screws, studs

This standard specifies the characteristics of pan head bolts with six lobe recess, relieved shank and long thread, in FE-PA2601 (FE-PA92HT), silver plated, for aerospace applications. Classification: 1 100 MPa ) / 650 °C ) NOTE Taking account of the recess geometry, the strength class to be used for the seating torque calculation shall not be greater than 900 MPa.