BS EN 3542:2018 Aerospace series. Inserts, screw thread, helical coil, self-locking, in heat resisting nickel base alloy NI-PH2801 (Inconel X750)

Heat-resistant materials
Dimensions
Testing conditions
Weight (mass)
Dimensional tolerances
Nickel alloys
Helical shape
Colour codes
Marking
Aircraft components
Designations
Fasteners
Vibration-resistant fasteners
Diameter
Temperature
Threaded fasteners
Thread inserts
Coils

Link: BS EN 3542:2018 Aerospace series. Inserts, screw thread, helical coil, self-locking, in heat resisting nickel base alloy NI-PH2801 (Inconel X750)
Source: BSI Standards