10 x 4” (5 x 100mm) Pozi Countersunk Twin Thread Wood Screws BZP - Box of 100, 00104CWZ

10 x 4” Wood Screws

10 x 4” (5 x 100mm) Timco countersunk wood screws in boxes of 100 with a strong twin thread that provides a secure fixing and high-pull-out resistance. Zinc plated with a double countersunk Pozi head to enhance screw insertion.

The sharp point and single lead also ensure a fast start and improves thread acceptance. Primarily used in softwoods but can also be used in masonry with a plastic wall plug making them a versatile choice.

A traditional twin-thread, double countersunk, Pozi wood screw used across many industries. Manufactured from carbon steel with a bright zinc finished and used by both professionals and DIY enthusiasts alike.

10 x 4” wood screw specification:

• Size: Imp 10 x 4” (5 x 100mm)
• Drive: Pozi
• Head type: Double countersunk
• Material: Carbon steel
• Finish: Zinc
• Sharp point and single lead for a fast start and improved thread acceptance
• Twin threads with parallel shank for faster insertion and greater pull-out resistance
• Double countersunk head reduces the likelihood of head shear

The range of wood screws held in stock at Fusion Fixings is growing. Take a look at our wood and timber screws section for the full and expanding range.

FAQs countersunk twin thread woodscrews

What is a Pozi countersunk twin-thread wood screw?

Pozi (Pozidriv) is the drive recess, which is a cross-slot plus additional wings to reduce cam-out and allow better torque.

Countersunk means the screw head is designed to sit flush or just below the surface of the material, allowing neat finish every time.

Twin thread, which is also called ‘double thread’, means the screw has two thread starts. This typically allows the screw to be driven and installed faster while offering increased pull-out resistance.

When should I use these screws, and what are they suitable for?

These screws are specifically designed for use in wood where a flush finish is required and where quick installation is needed.

The BZP finish does offer some corrosion resistance, but they are primarily used for interior / dry conditions) or protected environments.

Do I need to pre-drill holes before using these screws?

Generally, a pre-drilling a hole is not required, but when using in various hardwoods or near the edges it is recommended to avoid splitting the wood and to ensure the screw countersinks neatly.

What is the difference between twin-thread and single-thread screws and why might I choose twin-thread?

Twin-thread screws have two threads, which increases the rate at which the screw advances per revolution. This can give faster installation, better grip, and fast removal if needed. If you’re doing lots of fixings this can be a great time saver.

What does the BZP (Bright Zinc Plate) finish offer, and are there limitations?

BZP provides a shiny zinc-plated finish, which does offer a basic corrosion resistance which is more suited to indoor or protected conditions. For outdoor or highly humid/coastal environments a stainless steel woodscrew are recommended.

Are these screws compatible with power drivers and standard Pozi bits?

Yes, these Pozi drive screws are compatible with power drivers which allows for faster installation.

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