Carriage bolts with hexagon nuts are engineered for strong and reliable fastening in timber-to-timber applications. These zinc-plated carriage bolts provide exceptional corrosion resistance, ensuring long-lasting durability in both indoor and outdoor environments. Fully threaded up to 100mm, they offer versatility across a range of project needs. Known as coach bolts or cup square hex bolts, they feature a square section under the dome head to prevent bolt rotation during installation. Manufactured to DIN603 (bolt) and DIN934 (nut) standards, these carriage bolts are ideal for woodworking, construction, and general hardware applications.