Unifix SWG - Винт

UHB is a double-threaded wood spacer screw, suitable for insulation packages and for structural and non-structural applications in solid wood - certified ETA-12/0197 - reaction to fire class A1, according to EN 13501 - reduced cylindrical head - TX40 impression - double thread underhead 70mm, tip 59mm - central scraper fins for reduced screwing effort - manufactured from special hardened carbon steel with high flexibility - special tip prevents breakage of wood fibres - surface treatment with lubricating wax - white galvanised - no pre-drilling, no chipping, no countersinking required