TIMCO Twin-Thread Woodscrews – Zinc – Round – 4.0mm x 20mm (8 x 3/4) – Box of 200

Twin-Thread Zinc Round Head Woodscrews are a traditional twin-thread fixing designed for fast installation and reliable holding strength in soft timber and man-made boards. They can also be used for masonry fixing when installed with a suitable plastic wall plug, making them a versatile choice for general trade applications.

The Pozi drive round head provides improved clamping and a neat visible finish, particularly when fixing brackets, plates, hardware or other fittings to flat surfaces where a countersunk head is not required. The larger bearing surface of the round head helps to spread the load and reduce the risk of pull-through.

Manufactured from C10-18 steel, these woodscrews feature a 60° twin-thread design with a parallel shank for faster insertion and greater pull-out resistance. The screws are surface hardened to help prevent torque shearing under load, with a core-hardened structure for improved ductility, and a 25° sharp point with single lead for a fast start and reliable thread engagement.

All sizes up to and including 30mm are fully threaded, while 32mm and above are partially threaded, making longer screws suitable where draw-up between the materials being fixed is required. The bright zinc plating is suitable for internal and dry environment applications where a clean appearance and dependable performance are important.