Set Screw M20 x 50mm Black Gr.4.8 DIN 558

Set Screw
Hexagon Head
Metric
Black / Self Color
Mild Steel Grade 4.8
Dia: M20
Pitch: 2.5
Length: 50mm
DIN 558
Wrench Size Across Flats: 30mm
A DIN 558 hex head set screw is a fully threaded metric fastener with an external hexagonal head, primarily used for general construction and industrial applications where a strong, permanent connection is needed. The standard is largely superseded by ISO 4018 but remains common in the market.