Carriage bolts, complete with hexagon nuts, feature a zinc-plated finish and are fully threaded up to 150mm, with a 150mm thread length on bolts over that size. These bolts conform to DIN603 (bolt) and DIN934 (nut) standards. Also known as coach bolts or cup square hex bolts, they include a square section under the dome head to prevent rotation during tightening. Primarily used for timber-to-timber applications.
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