General description A domed head bolt with a square anti-spin shoulder, primarily used for clamping timber or attaching ironmongery to timber. Coated with a patented multi-layer corrosion-resistant plating, these bolts can withstand a 1,000 hours salt spray test, making them ideal for outdoor applications. Technical specifications Type: Carriage Bolts DIN603 Size: M8 x 75 Includes: Hex Full Nuts DIN934 & Form A DIN125-A Washer Finish: Exterior Silver