Also known as 'Cup Square Hex Bolts', the square underneath the Cup stops rotation of the bolt when tightening.
Conforms to DIN603 and DIN934 standards.
Available in a comprehensive range of sizes to suit most applications.
Used mainly for fastening timber to timber and is extensively used for timber joist construction in house building and numerous decking applications.
A Carriage Bolt, also known as a Coach Bolt or as a ‘Fully Threaded Cup Square Hex Bolt’, has a domed or countersunk head, and the shank is topped by a short square section under the head