The type of bolt needed to attach a treehouse to a tree by a professional treehouse builder or buildingcompany is called a treehouse attachment bolt, or TAB. Treehouse bolts are also known as tree anchor bolts, attached limb systems or special tree fasteners.
Tree house bolts need to be sturdy so that the treehouse is firmly fastened tothe tree. Another purpose of the bolts is to provide space between the tree trunk and the main beams of the treehouse to allow space for the natural growth and expansion of the tree. Treehouse fasteners orbolts are usually made of steel and can vary based onlength, powder coating and other factors, such as heat treatment and collar length.