HECO-TOPIX-plus CC CombiConnect: double thread for structural joints
APPLICATIONS
The fields of application are many:
T-joints instead of classic dovetails
orthogonal fibre reinforcements such as column-to-beam or beam-to-wall supports
Creation of mixed wood-wood floors or structural repairs by doubling or coupling beams
Reduction and stabilisation of cracks or holes in beams
Structural reinforcement or securing in cases of notches or concentration of high loads.no penetration stress and allow applications close to edges or small spacing.
HEAD - The head of the CombiConnect screws is significantly reduced so that it can be easily inserted into the timber beam.
THREADS - HECO-TOPIX-plus CC D89 has two threads: one on the tip side with a smaller outside diameter and one on the head side with a different, larger diameter and geometry. This difference causes the screw to create a coupling effect that for the 6.5mm diameter goes up to 3mm and for the 8.5mm diameter screws up to 5mm. The pitch of both threads is, however, large and guarantees very fast insertion times.
PUNTA - Special patented tip with increased diameter. Reduces the risk of cracking and avoids the need for pre-drilling on hard wood.