Twin-Thread Woodscrews – Zinc – Round Head

About Twin-Thread Zinc Round Head Woodscrews

Twin-Thread Zinc Round Head Woodscrews are a traditional twin-thread fixing designed for fast installation and reliable holding strength in common timber applications. They’re mainly used in softwood and man-made boards, and can also be used for masonry fixing when installed with a suitable plastic wall plug.

Finished with a bright zinc plating, this range is intended for internal and dry environment applications where speed of installation and dependable performance are required. The round head design makes these screws particularly suitable where clamping strength or a visible, neat head finish is needed.

Designed for Clamping and Surface Fixing Applications

Twin-Thread Zinc Round Head Woodscrews are intended for everyday fixing rather than specialist structural applications. They’re commonly used for:

• Timber-to-timber fixing where countersinking is not required
• Softwood timber applications
• Chipboard, MDF and man-made boards
• Fixing brackets, plates and fittings to flat surfaces
• Masonry fixing when used with a plastic wall plug

The round head provides increased bearing surface, helping to clamp materials securely without pulling through the top layer.

Key Design Features

Twin-thread zinc round head woodscrews incorporate practical features to improve installation speed, strength and reliability:

• Twin-thread design with parallel shank for faster insertion and increased pull-out resistance
• Round head profile for improved clamping and surface contact
• Single lead start for quick engagement and easier driving
• 25° sharp point for fast starts and improved thread acceptance
• Manufactured from C10–18 steel to ensure consistent quality
• Surface hardened to help prevent torque shearing under load, with a core-hardened structure for improved ductility

All sizes up to and including 30mm are fully threaded, while 32mm and above are partially threaded, making longer screws suitable where draw-up is required.

Where Twin-Thread Zinc Woodscrews Sit in the Range

Twin-Thread Zinc Woodscrews are a traditional, fast-driving fixing option within a wider woodscrew range. The round head version is ideal where a flush finish is not required and additional clamping strength or a clean, visible head is preferred.

For applications requiring a flush finish, a countersunk twin-thread woodscrew may be more suitable. For general internal fixing and surface-mounted applications, twin-thread zinc round head woodscrews offer a practical and cost-effective solution.

Trusted Trade Fixings

Our Twin-Thread Zinc Round Head Woodscrews are supplied by Timco and selected for reliability, consistent manufacture and suitability for everyday professional use.

Browse the range to find the right twin-thread zinc round head woodscrew size for your application.