Classic Double Countersunk Multi-Purpose Screws 4mm x 50mm (200pcs)

These Classic Double Countersunk Multi-Purpose Screws 4mm x 50mm come in a box of 200 and consistently perform efficiently across a range of common materials.

Features:

• Double countersunk reduces likelihood of head shear and assists completion of countersinking
• All sizes up to and including 75mm are fully threaded and lengths 80mm and above all have a 70mm thread length
• Patented lubrication - designed to enhance screw insertion time and provides greater resistance to corrosion
• Single slash on 25mm+ to reduce torque and the likelihood of the timber splitting when the screw is inserted very close to the edge
• 40° deep single thread to provide a secure fixing with high pull-out resistance
• Surface hardened up to 750 HV to prevent torque shearing under load and a core hardness of up to 450 HV for improved ductility

Details: