BS EN 4850:2022

What is this BS EN 4850 - Aerospace series about?

BS EN 4850 discusses aerospace series and screw, 100° countersunk normal head, Spiral Drive Recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated with a focus on classification: 1 100 MPa (at ambient temperature)/235 °C.

BS EN 4850 specifies the characteristics of externally threaded fasteners, 100° countersunk normal head, Spiral Drive Recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated, for aerospace applications. Classification: 1 100 MPa1/235 °C2.

Who is BS EN 4850 - Aerospace series for?

BS EN 4850 on aerospace series is useful for:

• Fasteners manufacturers
• Defence Industry
• Aerospace Industry
• Manufacturers of aerospace equipment and components
• Testing agencies involved in the inspection of aerospace products

Why should you use BS EN 4850 - Aerospace series?

Aerospace and Defence Standardisation (ASD-STAN) draws attention to the fact that it is claimed that compliance with this document may involve the use of a patent “Spiral Drive System for Threaded Fasteners” EP1025370B1. BS EN 4850 provides dimensions and tolerances that are expressed in millimetres and apply after surface treatment.

BS EN 4850 discusses requirements, configuration, dimensions, masses, tolerances of form and position, surface treatment, designation, marking, and technical specification.

This will help you to understand the characteristics of externally threaded fasteners.