Optimaxx PZ Countersunk Wood Screws 3.5 x 20mm 200 Pack (686TY)

Self-countersinking, hardened steel wood screw with double reinforced collar for strength and prevention of snapping. Suitable for use in hardwood, softwood, PVCu, MDF, chipboard and sheet material. Sharp point offers immediate start, even in hard and smooth surfaces. No pilot hole or pre-drilling required due to consistently angled slash-point and sharp saw-tooth formation, also offering prevention of splitting. Features lubricant-coated thread for rapid and continuous insertion. Deep Pozi offers secur... - Manufacturers part number: 686TY

• Unique 24 slots cut into the underside of the head - self countersinks into all material without the need to counter bore and without surface damage
• Razor sharp point as low as 20 degrees, with a thread that extends to the tip of the screw - giving you an immediate start even with the hardest, smoothest surfaces.
• Sharp sawtooth formation cut out of the bottom threads - on insertion the threads bite into the timber reducing torque and resistance, enabling fast penetration without a pilot hole.
• Sharp, wide, deep thread formation coated with a unique lubricant
• Double reinforced collar - significantly strengthens the underside of the head, preventing snapping and allowing a deeper pozi recess.