Fully threaded structural screw with a deep thread and high strength steel for excellent tensile and sliding performance. Approved for structural applications stressed in any direction relative to the grain, from 0 to 90 degrees.The 3 THORNS tip reduces minimum installation distances, so more screws fit in less space. Certified for timber to ETA-11/0030 and for timber-to-concrete via the TC FUSION system to ETA-22/0806, and can be used on steel plates with VGU and HUS washers. Fully threaded for reinforcement, tension, compression and sliding connections 3 THORNS tip reduces minimum spacing and installation effort Countersunk head up to 600mm, hexagonal head above, ideal for plates and concealed reinforcement Suitable for solid timber, glulam, CLT, LVL and high density woods ETA-11/0030 and ETA-22/0806 (TC FUSION) certified, UKCA marked (UKTA-0836 22/6195) Drive: TX40 (Ø9), TX50 (Ø11) Material: electrogalvanised carbon steel Service class SC1 to SC2, atmospheric corrosivity C1 to C2 Install with a torque-controlled screwdriver, impact drivers not permitted Price shown is per box. Select diameter and length to see pack quantity and price.