Metal connector plates
Encyclopedia
A truss connector plate is manufactured from ASTM A653/A653M, A591, A792/A792M, or A167 structural quality steel
Steel
Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten...

 and is protected with zinc
Zinc
Zinc , or spelter , is a metallic chemical element; it has the symbol Zn and atomic number 30. It is the first element in group 12 of the periodic table. Zinc is, in some respects, chemically similar to magnesium, because its ion is of similar size and its only common oxidation state is +2...

 or zinc-aluminum alloy coatings or their stainless steel
Stainless steel
In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable", is defined as a steel alloy with a minimum of 10.5 or 11% chromium content by mass....

equivalent. Metal connector plates have integral teeth and are manufactured to various sizes (that is, length and width) and thickness or gauges and are designed to laterally transmit loads in wood. They are also known as metal connector plates or nail plates.

Nailplates are used to connect timber of the same thickness in the same plane. They are pressed into the side of the timber using special hydraulic tools. As the plate is pressed in, the nails are all "driven" simultaneously and the compression between adjacent nails reduces the tendency to split.
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