C2 Strong-Fix Pozi Double Countersunk Twin-Cut Wood Screws Tub - 4.0 x 40mm - Pack of 1200 - Hardened Steel

C2 is a revolutionary high-performance screw designed using modern manufacturing methods. Its superior holding strength in a wide variety of materials provides ultimate performance
Deep recess to prevent 'cam-out', giving a precise and positive drive control on every screw
Ribs under head for improved countersinking and to give a smooth and flush finish, also prevents splitting and material damage
Fully threaded - screws are partially threaded from and including 80mm length to assist with clamping of materials
Dual angle thread for ultimate performance and exceptionally high pull-out resistance
Patented twin cut technology for rapid "pick-up" and reduces timber splitting
Helix shank for removing debris and to improve clamping
Coated with a high-molecular polymer lubricant that reduces the insertion torque by up to 52% and rust protection lasts up to 20 times longer than a standard zinc plating