Decking Screws - PZ - Double Countersunk - Exterior - Green
4.5 × 50 mm Pozi‑Drive Green-Plated Timber Screws
Timco exterior decking screws offer fast, secure fastening for softwood and treated timber decking. Finished in green organic plating with up to 500 hours salt spray resistance, they combine a sharp 25° point and helix shank for fast starts and cleaner insertion. The double‑countersunk ribbed head ensures a flush finish while minimizing wood splitting—driven with a PZ2 bit for precision and control. :contentReference[oaicite:2]{index=2}
Key Features & Benefits
- 500 hr Salt Spray Rated: Reliable corrosion resistance in exterior/urban applications.
- Helix Shank Design: Removes timber debris during installation for superior clamping power.
- 25° Sharp Point: Provides rapid bite and accurate thread entry without pre‑drilling in softwoods.
- Double-Countersunk Ribs: Heads seat cleanly below surface for a tidy finish.
- PZ2 Drive: Standard Pozidriv recess for efficient torque transfer and reduced cam‑out.
Product Details
- Diameter: 4.5 mm (Gauge 9)
- Length: 50 mm (thread length approx. 32 mm)
- Material: Carbon steel, green organic plated finish
- Corrosion Rating: ≈500 hr salt spray resistance (Rating 3 for low-salt environments)
- Complies with: BS EN 14592:2008 standard
- Pack Options: Box of 200; Tub of 2,000 pieces (product code 50TDECK for 50 mm size)
- Head Diameter: ≈8.76 mm; Point Type: 25° sharp; Recess: PZ2
Typical Uses
- Securing softwood decking boards to timber joists
- Outdoor joinery and landscaping timber fixings
- Construction of balustrades, steps, cladding, and other wood-to-wood applications
- Recommended for flush, clean installations with minimal surface disturbance
We aim to make getting your coatings quick and reliable. All orders are safely packaged and sent via courier.
Mainland UK shipping options
We offer three shipping options across Mainland UK: Standard, Express, and AM Express Next Day.
- Standard delivery (£4.80) typically takes 2 to 4 business days.
- Express delivery (£10.00) usually arrives in 1 to 3 business days. This is our most popular service and is available for orders placed before 10:30am, Monday through Thursday.
- AM express next day (£20.00) is our fastest service, guaranteed to arrive before 10:30am the next working day. This option is only available for delivery 10:30am, Monday through Thursday.
Important notes on processing
Next working day orders: To qualify for Express or AM Express, orders must be placed and confirmed before 10:30am, Monday through Thursday.
Weekend orders: Orders placed after 10:30am on Friday will be processed first thing on the following Monday morning.
Delivery surcharges (non-mainland UK)
We are currently unable to offer the above flat-rate costs to all areas. Please be aware that there may be additional delivery charges for customers in non-mainland UK areas, such as the Scottish Highlands and islands, Northern Ireland, and the Isle of Man. If your delivery address falls into one of these zones, we will get in touch with you before processing your order to confirm any extra costs. You will always have the option to proceed or cancel.
Got a serious project on your hands?
From our manufacturing plant based near Northampton, we can produce specialist coatings in volumes ranging from 5 to 1000 litres.
Simply call us on 01604 781880, or email info@trade-coatings.co.uk to arrange your trade account.