M6 x 50 Square Cup Steel Carriage Bolt M6 x 50 Square Cup Steel Carriage Bolt Carriage bolts complete with hexagon nut. Finish: Zinc Plated. Conforms to DIN603 (bolt) and DIN934 (nut) standards. Fully threaded up to 100mm. Also known as coach bolts or cup square hex bolts. Square section underneath dome head stops rotation of the bolt when tightened. Mainly used in joining timber to timber applications.
