Timco Chipboard Screws PZ Double Countersunk Exterior Black Organic (Size 4.0 x 30 25 Pieces)

ManoMano

General description A single thread woodscrew with a black corrosion resistant coating designed to withstand over 500 hours of salt spray. Ideal for use with black and black antique ironmongery. Technical specifications Size: 4.0 x 30 mm Coating: Black corrosion resistant Salt spray resistance: Over 500 hours

Amazon

Double countersunk reduces the likelihood of head shear and assists completion of countersinking 40° deep single thread to provide a secure fixing with high pull-out resistance 25° sharp point and single lead for a fast start and improved thread acceptance

Power Tools Direct

A Single Thread Woodscrew With A Black Corrosion Resistant Coating Designed To Withstand Over 500 Hours Salt Spray. Ideal For Use With Black And Black Antique Ironmongery.PTDTIM40030CHBP