GTS Treehouse Bolts
With the German Treehouse Screw GTS, you can attach your platform securely and permanently to the tree!
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6 products
In use for decades – Tree Bolts deliver what they promise!
The right GTS Screw
✔ Select the right tree bolt depending on the trunk diameter, wood strength and load.
✔ Add the accessories to securely fasten your wooden beams to the tree.
✔ Our ready-made Treehouse Hardware Kits show you how the products can be combined.
1,5 - 3,8 t
0,9 - 2,1 t
0,7 - 1,7 t
0,5 - 1,2 t
0,6 - 1,4 t
0,4 - 1,1 t
ø > 35 cm
ø > 30 cm
ø > 30 cm
ø > 25 cm
ø > 25 cm
ø > 20 cm
ø 36 mm = 20 cm
ø 74 mm = 7,5 cm
ø 36 mm = 17 cm
ø 36 mm = 17 cm
ø 36 mm = 14 cm
ø 36 mm = 14 cm
ø 24 mm = 13 cm
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Beam is mounted directly
Beam is mounted directly
As an auxiliary screw
ø 40 × 185 mm
ø 40 × 105 mm
ø 40 × 120 mm
250 × 90 × 8 mm
ø 34,5 × 120 mm
ø 30 × 35 mm
Note on the load capacity of the GTS*
These values are guidelines for vertical loads in the centre of the shank. The actual load capacity of the tree bolts depends on the following factors:
✔ Lever arm & direction of load
Rule of thumb for trunk diameter **
The recommended trunk diameter of the tree is measured at the mounting height of the GTS. You can calculate the optimal trunk diameter for your project using the following rule of thumb:
- For each additional GTS Screw: + 3 cm
- Very large and heavy treehouse: + 3 cm
- Stormy region: + 3 cm
- Platform higher than 5 m + 3 cm
Example: Recommended minimum trunk diameter for two GTS Allstar at a height of 6 m = ø 35 + 3 + 3 = ø 41 cm
