This standard BS EN 4853:2022 Aerospace series. Externally threaded fastener, 100° countersunk normal head, Spiral Drive Recess. Classification: 1 100 MPa (at ambient temperature)/425 °C is classified in these ICS categories:
49.030.01 Fasteners in general
49.030.20 Bolts, screws, studs
This document specifies the characteristics of externally threaded fasteners, 100° countersunk normal head, Spiral Drive Recess, for aerospace applications. Classification: 1 100 MPa /425 °C .