SDD Self-Drilling Dowel for Concealed Connectors

Description

SDD self-drilling dowel – Fast, play-free fixing for concealed aluminium connectors The SDD self-drilling dowel is designed for assembling timber members with concealed BTALU-type connectors, with no pre-drilling at all. Thanks to its drill point and its thread under the head, it gives a fast, clean and demountable installation while avoiding the mechanical play typical of plain dowels. Product specifications -Material: electro-galvanised carbon steel -Head: cylinder Ø12 mm -Thread: double thread (lower section + under the head) -Point: self-drilling with a chip evacuation flute -Drive: 6-lobe T-40 -Lengths available: 93 mm to 173 mm -Diameter: 7.5 mm -Thread lengths: Lg1 (lower): 8.5 to 12.5 mm Lg2 (upper): 27 to 36 mm -Packaging: box of 50 units -Unit weight: 33 g to 60 g depending on length Benefits -No pre-drilling required, even through aluminium -Thread under the head allowing dismantling without damage -Fast, play-free installation for reliable connections -Discreet cylinder head: flush or recessed installation in the timber -Suited to concealed connectors for a perfect appearance Applications -Substrate: solid timber, glulam, CLT panels -Fixed component: concealed aluminium BTALU-type connectors Uses: Timber/aluminium assembly -Installing CLT floors on CLT walls -Concealed fixing with hidden connectors -Prefabricated timber construction, structural and decorative