Eye bolts have a shank for anchoring to structures or equipment and a ring for attaching rope, hooks, or other hardware. Eye bolts cause minimal short term damage and the tree will continue to grow unaffected. According to the hammock calculator I need to install eye bolts 11.3 feet high. When you install an eye hook you are essentially drilling a hole into the tree. They're used as anchor eye bolts for routing or tying down wire and cable. These Stainless Steel Eye Bolts are useful for attaching tree swings to branches, building hammocks or other related tree house projects. Eye-bolts do pose some threat to tree safety but far less than “choking” it with straps does. Muzata 316 Stainless Steel Eye Shape Screws, Heavy Duty Screw Eyes for Metal Hook, Wood Terminal Ring Eyelet Hooks, Hammock Stand, Self Tapping Screws, 3.5 Inches M6 Eye Bolt … Great for light-duty applications, it is made with steel for strength and is … Decided to check McMaster-Carr. This will aid uniform weight distribution and also prevent the chains from rubbing against the swing when in motion. Zinc-Plated Eye Bolt with Nut This eye bolt boasts a formed circular eye This eye bolt boasts a formed circular eye at the non-threaded end and a blunt machine screw thread on the other end. I wanted the removable eye bolts, so, went searching. You may have to register before you can post: click the register link above to proceed. ZUSFUL 12-Pack 304 Stainless Steel Screw Eyes, Heavy Duty Screw in Eye Hooks Ring for Hammock Stand, Yoga & Brazilian Hammocks, Swing Chair, Indoor & Outdoor, Self Tapping Screws, 3.2 Inches Eye Bolt 4.7 out of 5 stars 109 From Princess Auto, a single bolt plus shipping would have been $28. 1/2 in. To start viewing messages, select the forum that you … There is a small chance that a guy with a chainsaw could hit them many years down the road. ie Bacteria from the bolts. x 8 in. 1" diameter by 12" long Eyebolt. I have seen bolts through many years of service and nothing with the installation has ever cause the tree to fail. Go right a head if it is your trees. The 12" does not include the eye, but leave enough space to get the nut/washer on and I like to see 1/2" or so sticking out because you can tell visually from a distance that the nut is not just barely holding on. The trees will be able to recover from the bolts installation. Permanent Eye Bolts for Hammocks? I finally got around to trying a hammock. Lift eye bolts are rated for vertical lifting up to their specified capacity. As an arborist we do this all the time to strengthen the tree with bad form. Another place I found with the part as described was Eastern Marine, where it would also have been $28 delivered. If this is your first visit, be sure to check out the FAQ by clicking the link above. the upshot is- the less slack in your hammock, the more horizontal force you are putting on each eye bolt- at a 30 degree angle from the horizontal, you're actually putting about 165 lbs of force on each eyebolt. You already know that the blood layer, the cambium, is directly under the tree bark so you might think that this would be a problem but it really isn’t. The eye bolts, screws eyes, or hooks should be installed 2 to 4 inches wider than your swing’s length. at tighter angles, you can easily put up to 10 times your bodyweight of force on each eyebolt! For instance, for a 50-inch swing, space the hangers 52 to 54 inches apart. Hole into the tree to fail 4 inches wider than your swing’s length be sure check. If this is your trees recover from the bolts installation 52 to 54 inches apart seen! Hangers 52 to 54 inches apart chainsaw could hit them many years of service and with. 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