Metal plate fixings are used specifically for either fixing timber together or timber to another material.
These fixings may use nails, screws or bolts as part of the system.
Information provided here is in addition to the design and specifications of these fixings covered in other pages on this site.
Nail- and screw-on fixings are typically light gauge (about 1 mm thick) pre-galvanised steel, although hot dipped galvanised and stainless steel is also available.
These connectors tend to be used when a high-strength, low-cost joint is required and visual attractiveness is not a high priority.
Bolt-on fixings are typically manufactured from 3, 5 or 6 mm thick steel and hot dip galvanised during the manufacturing process.
Stainless steel and powder coating finishes are available. Bolts are usually manufactured from 12 mm hot dip galvanised steel.
T bracket with M12 bolts.
Photo: Courtesy MiTek.
Another type of fixing is the toothed truss connector plate. This is a steel plate with multiple spikes or teeth projecting from one face.
The connectors are pressed into the timber using hydraulic or pneumatic presses. Timber elements can be efficiently joined together to make trusses and other structural timber components.
In New Zealand, there are two companies supplying metal plate fixings: MiTek (which market under the brand names Gang-Nail, Lumberlok and Bowmac) and Pryda.
Products are sold through building supply companies such as PlaceMakers, Carters, Bunnings, Mitre 10 and other independent suppliers.
Availability information on the following: