BULLDOG Timber connector (double-sided)
Single sided or double sided Bulldog® toothed plate are made from steel sheet. While using the single-sided toothed connectors for wood/ wood as well as wood/ steel/ connections you can use the double-sided toothed connector only for wood connections. The double-sided Bulldog- timber connector gets it's name depending on it's size C1, C3 or C5. All Bulldog- connectors are individually galvanised as protection for corrosion. For the double-side connector, the contact between dowel and bolt is not required. Make sure that the bore diameter should be only max. 1 mm bigger than the nominal diameter of the bolts. That means, when using a bolt with a diameter of M12, you need to use a wood-drill bit size 13.
To avoid twisting of the wood connecting it's necessary to place a double-sided Bulldog timber connector between the 2 timbers. Due to the screwing of the bolt the teeth of the Bulldug connectors gets pressed into the wood.