This 4mm x 40mm variant is supplied in a pack of 1200, offering excellent versatility for a wide range of interior timber fixing applications. The 40mm length provides greater penetration depth, making it suitable for joining thicker boards and general construction work. Featuring a torx compatible drive, these screws deliver excellent torque transmission whilst minimising the risk of cam-out. The recessed ribs provide improved countersinking and reduced surface dust, whilst the reinforced countersunk neck improves holding power for a secure fix. The patented drill and drive thread reduces timber splitting, eliminates 'jacking' and spinning of joined timber, and increases pull-out resistance. A sharp point provides faster bite and is capable of piercing 0.8Mm steel. Protected by an advanced 'elementech 400' coating, these screws offer anti-corrosive performance lasting up to 6 times longer than standard zinc coatings. The environmentally friendly coating contains no cr6 and is salt spray tested to 400 hours, making them suitable for interior use. Features and benefits: 4mm x 40mm size for versatile timber fixing applications pack of 1200 provides excellent project coverage torx compatible drive with complimentary bit included patented thread design prevents splitting and spinning elementech 400 coating for long-lasting corrosion resistance specifications: size mm : 4 length mm : 40 head type: countersunk torx thread: drill & drive finish: elementech pack qty.: 1200