Post-Purlin Connector with Core Thread M16 and 
Upper Plate: Ø 100

You need stabile and reliable connections that you can process as well as re-stress in a quick and precise way.
The Pitzl SPP connectors ensure a perfect hold.
SPP post-purlin connectors - the ideal solution for tensile connections or wood connections with combined load types, such as post-purlin connections. SPP is a retensionable wood connection that can be loosened and removed without problems. According to the ETA, a straight screw connection is permitted even in cross-grained wood. This makes it possible to increase the tensile load-carrying capacity by increasing the effective thread length at the wood screw. 

Plate Diameter 100mm

See also accessory tool 20.938.0000