4.5 x 70 Decking Screws - PZ - Double Countersunk - Exterior - Green (200PC)

An economic but highly effective softwood decking screw. Plated to withstand up to 500 hours in a salt spray cabinet and designed to give a rapid installation and a secure fixing.
Ribs under head for improved countersinking
Helix shank for removing debris and to improve clamping
25° sharp point and single lead for a fast start and improved thread acceptance