BS EN 50341-2-15:2019 Overhead electrical lines exceeding AC 1 kV National Normative Aspects (NNAs) for the Netherlands (based on EN 50341-1:2012)

Electric cables
Electric power transmission
Northern Ireland
Scotland
Alternating-current power transmission
Electric power transmission lines
Alternating current
Wales
Structural design
Overhead power lines
Electric power distribution lines
Electrical equipment
Electric power systems
Power cables
Overhead line conductors
High-voltage equipment
Loading
England
United Kingdom
Overhead contact lines

Link: BS EN 50341-2-15:2019 Overhead electrical lines exceeding AC 1 kV National Normative Aspects (NNAs) for the Netherlands (based on EN 50341-1:2012)
Source: BSI Standards

BS EN 4852:2019 Aerospace series. External spiral drive heads for threaded fasteners. Geometrical definition and fastener head wrenching configuration

Tensile strength
Acceptance (approval)
Titanium alloys
Bolts
External-thread fasteners
Fasteners
MJ threads
Approval testing
Threaded fasteners
Aircraft components

Link: BS EN 4852:2019 Aerospace series. External spiral drive heads for threaded fasteners. Geometrical definition and fastener head wrenching configuration
Source: BSI Standards