Tongue-Tite Stainless steel Screw (Dia)3.5mm (L)49mm, Pack of 200. Corrosion-resistant, stainless steel tongue and groove board screws. Lost head allows the screw to be driven, without a pilot hole, into the tongue without splitting the board. Twin thread tip for a balanced and true start. Tri-Lock TS thread eliminates timber split and thread form prevents the board from lifting. Fixes flush as the screw seats beneath the tongue and is removable. Ideal for exterior cladding and boards. Supplied with T10 driver bit.. This pack of Star drive recess countersunk head self drilling screws are constructed from a durable metal, 49mm in length and come twin thread. They have tri-lock threadform and shank. They're ideal for a range of DIY applications. Flooring screw by Tongue-Tite.

Brand Name	Tongue-Tite