Case hardened twin thread wood screws with a bright zinc plated finish. The double helix thread drives fast and accurately, the roundhead profile sits proud of the surface, and the shank grip reduces splitting. Available in multiple sizes.
Size
Price
QTY
6 x 1in
£1.77£2.12
8 x 1/2in
£0.98£1.18
8 x 5/8in
£1.85£2.22
8 x 3/4in
£1.99£2.39
8 x 1in
£2.34£2.81
8 x 1 1/4in
£2.65£3.18
8 x 1 1/2in
£3.08£3.70
8 x 2in
£3.59£4.31
10 x 1 1/4in
£2.19£2.63
10 x 1 1/2in
£3.63£4.36
10 x 2in
£4.59£5.51
These roundhead BZP wood screws are a solid everyday choice for general timber fixing where a countersunk head simply won’t do. The roundhead profile sits proud of the surface, making them ideal where a flush finish isn’t required or where you need the head to bear against a surface. The bright zinc plating gives a clean, corrosion-resistant finish that holds up well in dry internal conditions.
The twin thread design is where these screws earn their keep. The double helix angled thread cuts into timber faster than a standard single thread screw, roughly half the turns for the same depth. That adds up quickly when you’re working through a box of 200. There’s less fatigue, less time spent on each fixing, and a noticeably cleaner drive. The shank beneath the head is designed to grip the timber and reduce splitting, which matters when you’re working close to an edge or into hardwood.
What Makes These Roundhead BZP Wood Screws Stand Out
Case hardening gives these screws extra strength without making them brittle. You get a screw that can handle real torque without the head shearing off halfway through a drive, which is exactly what you want when you’re working at pace. The Pozi recess is well-formed, which helps the driver bit stay engaged and reduces cam-out.
The BZP finish also makes these screws compatible with most standard wallplugs, so they’re a practical choice for fixing into masonry as well as straight timber-to-timber work. With sizes ranging from 8 x 5/8in up to 10 x 2in, there’s enough variety in the range to cover most general joinery and carpentry applications. Sold in boxes of 200, the price per screw is hard to argue with.
Pro Tip: Pre-drill a pilot hole in hardwood or when fixing close to the end grain to get the full benefit of the twin thread grip without risking a split.
These screws are used across general carpentry, joinery, and first-fix timber work. Common applications include fixing battens, securing timber frames, attaching brackets, and general board fixing where a proud head is acceptable or preferred. The compatibility with standard wallplugs makes them equally useful for fixing into masonry with a plug, not just direct timber work.
Smaller sizes in the range suit lighter cabinet work and internal trim, while the longer 2in sizes handle thicker timber sections and structural batten work. A reliable box to have on the van for jobs where you just need a fast, accurate fixing without fussing over specialist screws.
Best For
General timber fixing
Batten and framing work
Bracket and board attachment
Fixing into masonry with wallplugs
Internal joinery and carpentry
Available Sizes
8 x 5/8in
8 x 3/4in
8 x 1in
8 x 1 1/4in
8 x 1 1/2in
8 x 2in
6 x 1in
10 x 1 1/4in
10 x 1 1/2in
10 x 2in
Key Features
Case hardened for extra strength
Double helix twin thread for fast driving
Shank grip reduces splitting
Bright zinc plated finish
Pozi recess drive
Roundhead profile
Compatible with standard wallplugs
Not suitable for: Not suitable for external or wet conditions without additional protection, as BZP plating offers limited resistance to prolonged moisture exposure. Not recommended for structural load-bearing applications where rated fixings are required.
No special preparation is needed for softwood. For hardwood or when fixing near edges, drill a pilot hole slightly smaller than the screw shank to prevent splitting and ensure a clean drive. Use a Pozi PZ2 bit for most sizes in this range.
Keep the driver bit pressed firmly into the recess throughout the drive to avoid cam-out. The twin thread pulls the screw down quickly, so control the speed on your drill or driver to avoid overdriving, particularly in softer timbers where the head can sink too deep.
Select the correct screw size for the timber thickness and load required
Pre-drill a pilot hole in hardwood or when fixing within 20mm of the timber edge
If fixing into masonry, drill the wall, insert a compatible wallplug, then drive the screw
Fit a Pozi PZ2 bit to your drill or driver
Position the screw and drive at a steady, controlled speed
Apply firm forward pressure to keep the bit engaged in the recess
Stop once the head is seated against the surface, do not overdrive
What driver bit do I need for these screws?
A Pozi PZ2 bit covers most sizes in this range. For the larger No.10 sizes, a PZ2 still works but a good quality bit with a tight fit in the recess will give you a cleaner drive and reduce wear.
Are these screws suitable for outdoor use?
The bright zinc plating offers basic corrosion resistance for dry internal use. They are not well suited to external or exposed conditions. For outdoor applications, stainless steel or hot dipped galvanised screws are the better choice.
Case hardened steel construction with a bright zinc plated finish. The double helix twin thread profile is angled to cut into timber fibres efficiently, reducing the number of rotations needed to achieve full depth compared to a standard single thread screw. The shank geometry beneath the head is designed to clamp and grip the timber surface without causing radial splitting. Pozi recess drive, roundhead profile.
Drive Type
Pozi PZ2
Head Type
Roundhead
Thread Type
Twin thread (double helix)
Material
Case hardened steel
Finish
Bright zinc plated (BZP)
Box Quantity
200
Available Sizes
6 x 1in, 8 x 5/8in, 8 x 3/4in, 8 x 1in, 8 x 1 1/4in, 8 x 1 1/2in, 8 x 2in, 10 x 1 1/4in, 10 x 1 1/2in, 10 x 2in
Wallplug Compatible
Yes, most standard wallplugs
Weight
N/A
Size
10 x 1 1/2in, 10 x 1 1/4in, 10 x 2in, 6 x 1in, 8 x 1 1/2in, 8 x 1 1/4in, 8 x 1/2in, 8 x 1in, 8 x 2in, 8 x 3/4in, 8 x 5/8in
Box Quantity
200
Product Type
Bright Zinc Pozi Twinthread Screws – Roundhead
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