Specification Brand : Nelson Treehouse BulletPoint1 : Nelson Treehouse Attachment Bolts (TABs) are the structural backbone of every treehouse and will ensure a safe & sustainable treehouse project for not only your family, but for the trees as well. BulletPoint2 : The Nelson Treehouse Standard Limb TAB is designed for adult-scale treehouses. BulletPoint3 : Standard Limb TAB load varies on tree species (hardwood vs. softwood). Working load per Standard Limb is between ~3,000-10,000lbs BulletPoint4 : The lag-threaded end secures the TAB in the tree, while the other end extends outward, acting as an artificial tree limb that supports structural members like beams. You’ll attach your beams to the TABs using a Dynamic or Static Uplift Arrestors. BulletPoint5 : Using the correct treehouse hardware will ensure your treehouse is safe & secure, while allowing the tree(s) to move and grow for the life of the tree. BulletPoint6 : Lab Tested & Engineer Approved. Nelson Treehouse Hardware is the highest quality treehouse hardware on the market. BulletPoint7 : For installation, use the "Standard Limb TAB Install Kit" Color : Steel ExteriorFinish : Unfinished ExternallyAssignedProductIdentifier1 : 0650728284000 ExternallyAssignedProductIdentifier2 : 650728284000 ItemName : Standard Limb Treehouse Attachment Bolt ItemTypeKeyword : structural-bolts Manufacturer : Nelson Treehouse ManufacturerGrade : Grade 2 Material : Carbon Steel MetalType : Alloy Steel NumberOfItems : 1 PartNumber : 650728284000 ProductDescription : The Standard Limb Treehouse Attachment Bolt (SL TAB) is made of 4140 Carbon Steel and is the backbone of treehouse-building. It's a tree-friendly piece of hardware that allows the tree to grow around the TAB, making the connection even stronger over time. A properly installed SL TAB may support between 8,000 to 10,000 pounds of force, depending on the species of the tree(s).* How it works in short terms: the coarsely threaded end secures the TAB within the heart wood of the 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 and/or purchase our Treehouse Instructional Guide. ProductSiteLaunchDate : 2023-12-04T19:32:37.331Z Size : 24.5" SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 288 UnspscCode : 31161500