BZP Cup Square Hexagon Bolts & Nuts

Our BZP Cup Square Hex Bolts are also sometimes known as coach bolts or carriage bolts. They are ideal for use in timber connections as the square section under the mushroom head pulls into the timber enabling the bolt to be tightened without the head spinning. The mushroom or domed head gives a neat appearance.

These Cup Square hex bolts are produced to DIN603/555 out of 4.6 grade mild steel. They are usually either fully threaded or over 100mm long have approximately 100mm of thread. They are most commonly supplied in a BZP finish as standard but we also supply some sizes in Galvanised steel or Stainless Steel for use in external or corrosive environments.

The bolts are normally supplied with hexagon nuts as standard. They are often used in conjunction with repair washers, square plate washers and timber connectors which can be purchased separately.