ForgeFix General Purpose Twin Thread Countersunk Screws (Zinc Plated) - 19 x 3.9mm (200 Pack Box) (CSK347ZP)
These zinc plated countersunk 19 x 3.9mm general purpose screws are a perfect fixing for a variety of ironmongery, electrical and plumbing applications.
The twin thread of these screws makes it easier to get screws started and leads to higher pull out values in high density materials such as oak or mahogany since the tighter thread increases surface contact between the screw and substrate resulting in a greater holding power.Coated with a zinc plating finish to protect the steel screws from oxidation.The countersunk head of these screws means that they will sit flush with the materials surface resulting in a smooth finish.A pozidriv head means that these screws can be driven in faster with a reduced chance of a cam out since the pozi cross-head grips better than other head shapes.