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TAB: Treehouse Attachment Bolt


This item is currently on Backorder. Approximately 2-3 week lead time. This bolt of 4140 Carbon Steel is the back bone of our treehouse building. It is an arboreal friendly manner that allows the tree to grow around the TAB, making it stronger. A standard size TAB can support between 8,000 to 12,000 pounds of force. These numbers, of course, depend on the tree species. How it works in sort terms: the coarsely threaded end will secure the entire TAB within the heart wood of a tree.  The “boss,” the thicker piece of 3” diameter steel, provides the majority of the TAB’s compressive strength, and allows for greater distribution of load.  The “arm” extends out from the boss and supports the beams. It is advised that you contact us for a consultation or purchase our Treehouse Instructional Guide.



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