









GTS Safety – Tree bolt up to 1,100 kg load
Small Tree Bolt for Attaching cables and struts
✔ Small tree bolt with high load capacity
✔ Simple & tree-friendly installation
✔ M20 thread extendable (e.g. ring nut, etc.)
✔ Ideal for tree trunks with a diameter of 20 cm (7.9 in) or more
Secure bracket for the tree: for cables, sun sails, flying roofs, birdhouses, nesting boxes and much more.
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Quick Facts

GTS Safety – Product Details

Load Capacity – GTS Safety 2.0
Guidelines for the load capacity of the GTS Safety 2.0 when loaded in the centre of the shank (lever arm 1 cm):
- Vertical: 400 - 1100 kg
- Horizontal: 300 - 600 kg
- Pulling out: 300 - 600 kg
These values are guidelines only – the exact load capacity depends greatly on the type of tree and the direction of the load!
The load capacity should never be pushed to its limits!
Further information can be found in the blog post ‘GTS Studies and Tests’.
Product innovations 2.0
- NEW – Tree Thread 2.0 Safety
The double-threaded thread was specially developed for living trees. The optimised geometry maximises load transfer and facilitates installation.
- NEW – Quick Start Pin
The smoothed tenon allows direct insertion into the drill hole – for faster, effortless installation in the tree.
- Seal +
The parabolic cylinder seals the drill hole and ensures a secure fit.
- Shaft ø 30
With a diameter of 30 mm and a length of 35 mm, the shank offers sufficient space for small accessories and for attaching cables. Two jaws with SW 27 allow the screw to be screwed in further.
- Stainless
No rust, even in wood containing acid!
Assembly video & instructions
Detailed instructions can be found here ...
Assembly video:
Please note that the dimensions in the video may differ. The dimensions on the product page always apply!

Shipping & Delivery
- Ready for dispatch in 3 - 5 working days
- Delivery time depending on zone 1 - 14 working days
- Shipping costs according to weight (see shopping basket)
Further information here: Shipping service
Important helper for reinforcing, securing & stabilising
Our smallest GTS Safety comes with a short shank and practically no lever arm – this ensures a surprisingly high load capacity.
As a rope suspension, it can hold up to 400 kg in softwood and 800 kg in hardwood (e.g. oak). If it is pressed into the tree under pressure, for example with the GTS+ BackUp or the Strut Connector Safety, the load capacity increases significantly.
Thanks to its simple installation and a minimum trunk diameter of only 20 cm (7.9 in), it is flexible in use – even on branches, forked trees or slender neighbouring trees. Ideal for reinforcing wobbly or overloaded platform areas.

Anchor point for cables on the tree
With the new ‘Tree Thread 2.0’, the screw can be installed in no time at all and is much more resilient than comparable threaded rods and normal wood screws! The rope should run as vertically downwards as possible. If necessary, a M20 ring nut can be installed instead of the Hex Nut supplied.

Maximise load capacity – from below
With the GTS+ BackUp System, you can almost double the load capacity of your large GTS Screws. The GTS Safety is pressed firmly into the tree. With the turnbuckle, you can also push a sagging screw back up into place.

Maximise load capacity – from above
Alternatively, you can use the GTS Safety and a turnbuckle to secure the GTS Screws from above and significantly increase the load capacity. Which method you choose depends mainly on where you can best attach the GTS Safety.
Example with accessories
Here, 4 height-adjustable struts have been mounted to support the platform above (without treehouse). The freedom in arranging the struts on the tree is clearly visible. The Hex Nuts were subsequently painted black by the customer – very sexy!
