Cup Square M8 x 40mm Zinc Plated Gr.4.8 DIN 603

Cup Square
Metric
Zinc Plated
Mild Steel Grade 4.8
Dia: M8
Pitch: 1.25
Length: 40mm
DIN 603
Wrench Size Across Flats: 13mm - to fasten nut only.
The DIN 603 cup square bolt (also known as a carriage bolt or coach bolt) is a specialized, tamper-resistant fastener primarily used for joining timber components. It features a unique design that allows for single-sided installation and a smooth finish.