Performance Exterior Countersunk Black Screw - Box of 200
Performance Exterior Countersunk Black Screw - Box of 200
- Double countersunk head with ribs
- Deep, sharp and serrated thread
- Corrosion-resistant Ruspert coating
- Versatile, strong and extremely durable
Performance Exterior CSK Black Screws (Box of 200)
- The Performance Exterior CSK Black Screw is a high-performance exterior wood screw engineered for strength, durability, and long-term resistance to corrosion in demanding outdoor environments. Supplied in a box of 200, these screws are suitable for professional trade use and high-quality external timber installations.
- Each screw features a double countersunk head with ribs, allowing the head to sit flush while providing improved countersinking and reduced surface damage. The ribbed underside helps prevent timber splitting and improves load distribution, resulting in a cleaner, more secure finish.
- The deep, sharp, serrated thread is designed to cut quickly into timber, delivering excellent pull-down strength and high resistance to loosening over time. This aggressive thread profile ensures maximum holding power, even in dense or treated timbers commonly used in exterior construction.
- Finished with a corrosion-resistant Ruspert coating, these screws offer superior protection against corrosion and rust, making them ideal for prolonged outdoor exposure. The black finish provides both functional corrosion resistance and a discreet appearance for visible fixings.
Technical Features
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Double countersunk head with ribs
Improves countersinking, reduces splitting, and ensures a flush, professional finish. -
Deep, sharp, serrated thread
Enhances cutting performance, pull-down strength, and long-term fixing security. -
Ruspert corrosion-resistant coating
Provides excellent resistance to corrosion and rust for exterior applications. -
High-strength exterior performance
Designed for use in demanding outdoor environments.
Thread Configuration
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Fully threaded on screws below 70mm
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Partially threaded on screws 70mm and above, allowing for improved clamping and pull-down of timber sections
This design helps draw materials tightly together on thicker timber applications, improving overall joint strength.
Suitable Applications
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Decking and subframe construction
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Fencing, gates, and posts
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External timber cladding
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Garden buildings and outdoor structures
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General exterior carpentry and joinery
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Free next day delivery
We offer free next day delivery to UK Mainland for all orders over £50. Any orders below £50 are subject to a £5.99 delivery charge (all charges ex VAT).
Pre 10.30am and Pre 12.30pm Next Day Delivery
These delivery options are available at an extra charge. Delivery prices are shown at checkout stage. Orders need to be placed before 1pm Monday - Friday (working days) for delivery on the following working day.
International Delivery
We currently don't offer international delivery through the website. If you would like a quote please get in touch.
Republic of Ireland
All shipments going to Republic Of Ireland will be sent on DAP terms. Please note that when the goods arrive in ROI the customer will be required to pay import tax and any necessary import duties before the goods are released.
Highlands, Channel and offshore islands
For this area, there is an extra charge per consignment that will be shown at the checkout stage.
Please Note
*Orders placed before 2pm are dispatched on a next-day delivery service, subject to stock availability. While we endeavour to ensure next-day delivery, there may be occasional delays due to circumstances beyond our control. Should any issues arise with your order, we will contact you promptly to keep you informed.
