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Timco Self Drilling Screws – Light Steel – Exterior Bi-Metal – Hex Head – 5.5mm x 50mm - Box of 100
£33.33 ex VAT(£39.99 inc VAT)
Timco Self Drilling Screws – Light Steel – Exterior Bi-Metal – Hex Head – 5.5mm x 70mm - Box of 100
£42.24 ex VAT(£50.69 inc VAT)
Timco Self Drilling Screws – Light Steel – Exterior Bi-Metal – Hex Head with EPDM Washer – 5.5mm x 50mm – Box of 100
Pack Quantity:
100
5.5 x 50mm bi metal self drilling screws with EPDM washer for fixing roofing sheets to light steel up to 5mm. Stainless steel body, No.3 drill point and watertight seal.
£36.33 ex VAT(£43.59 inc VAT)
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Description
These 50mm bi metal self drilling screws fix roofing sheets directly to light section steel up to 5.0mm. Because of the hardened No.3 drill point, they cut through steel quickly and remove the need for pre-drilling.
At the same time, the A2-304 stainless steel body provides excellent corrosion resistance. This combination delivers fast drilling performance along with long-term durability. As a result, 50mm bi metal self drilling screws are ideal for roofing and external applications.
The 16mm EPDM washer compresses during installation. Therefore, it creates a watertight seal that helps prevent water ingress. In addition, the hex head design improves drive control and reduces slippage when fixing.
Key Features
- Bi-metal construction with A2-304 stainless steel body
- Hardened carbon steel No.3 drill point
- EPDM washer provides a watertight seal
- Designed for light steel up to 5.0mm
- 60° self-tapping thread for secure fixing
- Fully threaded for strong hold
- Corrosion Rating 4 for external environments
Typical Applications
- Roofing sheets to light steel
- Cladding installations
- External metal-to-metal fixing
- Construction projects exposed to the elements
These screws are manufactured for steel substrates and perform reliably in urban and industrial environments with moderate salt exposure.
Features
| Weight | 0.98 kg |
|---|---|
| Brand |
Timco |
| Corrosion Rating (1-5) |
4 – Urban & industrial areas with a moderate salt atmosphere |
| Drill Tip L (mm) |
8.5 |
| Effective Thread L (mm) |
34 |
| EPDM Washer (mm) |
16 |
| Finish |
Exterior (Silver Organic) |
| Fixed Washer Dia. mm |
11 |
| FW Ø (mm) |
11 |
| Head H (mm) |
5.3 |
| Head Type |
Hex |
| Included Items |
16mm EPDM Washers |
| Length mm |
50 |
| Material |
Bi-Metal/A2-304 Stainless Steel/Carbon Steel |
| MDT (mm) |
5 |
| Pack Qty |
100 |
| Pack Type |
Box |
| Point Type |
Self-Drilling No.3 |
| Size |
5.5mm x 50mm |
| Socket Size mm |
8 |
| Substrates |
Steel |
| Thread Coverage |
Fully Threaded |
| Thread Dia. mm |
5.5 |
| Thread Type |
60° Self-Tapping |
Delivery & Returns
All orders to the UK mainland are free of charge over £85 inc VAT. Orders under £85 inc VAT are charged at £9.95. We aim to dispatch orders placed before 3pm Monday to Friday on the same working day, with delivery to most UK mainland addresses typically taking 1–2 working days.
Some products have a longer delivery lead time, such as 3–4 working days. Where this applies, the expected delivery timeframe will be clearly stated on the individual product page. Orders may be dispatched from more than one location and items within the same order may therefore arrive separately. Please see our full Delivery & Returns Policy for further information.
Returns: Please inspect your goods as soon as reasonably possible after delivery and contact us promptly if anything is damaged, incorrect or appears to be faulty. Prompt notification helps us investigate delivery issues with our couriers and suppliers, but does not affect your statutory rights.
For consumer change-of-mind returns, you are responsible for arranging and paying the cost of returning the goods to us. Some products, including ladders, long-length building materials and other oversized goods, cannot normally be returned using standard postal services. For large, heavy or oversized goods that cannot normally be returned by post, we estimate that return carriage may cost up to £75 (including VAT) within the UK mainland. The actual cost will depend on the size and weight of the goods, the collection location and the carrier or return service used.
Please contact us before returning any goods so that we can provide the correct return address and any applicable return instructions or authorisation requirements. Different provisions apply to business customers and to goods that are faulty, damaged, incorrect or misdescribed. Please see our full Delivery & Returns Policy for full details.
Should you require any assistance, please email us at sales@fastfixingsonline.com, call us on 07920 120644, or complete our contact form. We are open Monday to Friday, 9am–5pm.
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