Description
The Timco Solo Wood Screws Zinc Yellow 3.5 millimetres x 40 millimetres Pack of 200 is a reliable and cost-effective fixing solution designed for use in timber, chipboard, plastic, MDF, and even masonry when used with a plastic plug. Manufactured from strong carbon steel and finished in corrosion-resistant zinc yellow, these screws are ideal for both professional tradespeople and DIY users. With a fully threaded design, sharp point, and deep single thread, these screws ensure secure fixing in low-density substrates with minimal effort. These Solo screws are single thread woodscrews engineered for consistent and high performance across a wide range of materials. Whether used in softwood, chipboard, MDF, or man-made boards, they provide reliable holding strength, making them suitable for furniture assembly, timber frame fixing, and general joinery applications. The screws can also be fixed into masonry by using a compatible plastic wall plug, offering additional versatility. Each screw is 3.5 millimetres in diameter and 40 millimetres in length, with full thread coverage up to 75 millimetres. This thread design provides increased grip and pull-out resistance, essential for securing materials in place and preventing loosening over time. The screws feature a double countersunk head, which reduces the risk of head shear under load and helps achieve a flush, professional finish. The double countersunk head also assists in finishing off countersinking more easily. It provides better load distribution across the head surface, reducing surface damage while ensuring the screw seats securely into the material. The head diameter is 6.68 millimetres, which offers stability while still allowing a neat appearance on the finished surface. The 25 degree sharp point enables a fast and clean start without the need for pre-drilling in most substrates. The sharp single lead design helps the screw to cut into the surface efficiently, offering smoother thread engagement and faster driving with less effort. This point also reduces splitting in timber, improving the finish and durability of the installation. These screws are wax lubricated, a key feature that enhances insertion speed and significantly reduces the driving torque required. The lubrication helps reduce wear on tools and driver bits, particularly useful when using power drivers for repetitive tasks. It also assists with corrosion resistance and prolongs screw life in storage and in dry interior conditions. The 40 degree deep single thread design improves grip in soft and man-made woods, providing high pull-out resistance and reducing the risk of material movement over time. This thread configuration is specifically tailored for low density materials where a strong and stable hold is required. The screws are finished in zinc and yellow passivation, which provides a corrosion rating of 1, making them best suited for clean, dry, and low humidity interior environments. Their carbon steel build adds further durability and ensures consistent strength across the batch. Driver compatibility is with a PZ2 Pozidriv bit, which is standard in most toolkits. These screws are packaged in a box containing 200 pieces, offering excellent value and convenience for trades and DIY users alike. The box is clearly labelled for easy identification, making them simple to store and access on site or in the workshop.