M20 Timber Connectors

• Timber connectors or dog tooth washers are mainly used with carriage bolts, where timber to timber connections are required.
• The teeth bite in to the timber, offering a no movement fastening.
• The washers are zinc plated for increased corrosion resistance.

Zinc coatings prevent oxidation of the protected metal to create a longer lasting finish. It does this by forming a barrier and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not trigger a breakdown of the substrates surface integrity as it is formed. The zinc oxide, if left intact, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminum and stainless steels by their oxide layers.