BS EN 3833:2019 Aerospace series. Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), passivated. Classification: 1 550 MPa (at ambient temperature)/650 °C. Technical specification

Nickel alloys
Heat-resistant materials
Aircraft components
Bolts
Fasteners
Tensile strength
Coatings
Dimensions
Inspection
MJ threads
External-thread fasteners
Test methods
Threads
Acceptance (approval)
Threaded fasteners

Link: BS EN 3833:2019 Aerospace series. Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), passivated. Classification: 1 550 MPa (at ambient temperature)/650 °C. Technical specification
Source: BSI Standards