Description
Fixing a coloured roof sheet with an uncoated screw undoes the specification at the last step. The RoofingPro™ RS50 solves that: a 50mm x 5.5mm hex head self-drilling roofing screw with the head and the EPDM washer powder coated in RAL 9005 Jet Black.
The self-drilling No.3 point removes the pre-drilling step entirely. Drive straight into light section steel up to 5mm and the screw cuts, taps and seats in one operation, with 35mm of effective thread engaging behind the sheet.
At 50mm it suits deeper profiles and insulated build-ups where a shorter fixing runs out of thread before it reaches the steel. Box profile, corrugated and trapezoidal sheets all sit comfortably within its range.
Specified across roofing, cladding, rainscreen and agricultural work, where hundreds of fixings across an elevation either vanish into the finish or advertise themselves.
Colour Matched in RAL 9005 Jet Black
Black conceals weathering and staining better than any other finish, which makes it a common choice for rural and agricultural buildings where roofs are rarely cleaned. A matching black fixing keeps that low-maintenance logic intact.
Jet black has moved from agricultural sheeting into mainstream commercial and residential architecture. Black box profile roofs, dark standing seam, black rainscreen and contemporary barn conversions all specify RAL 9005. RAL 9005 Jet Black is a deep true black, applied here to both the hex head and the sealing washer.
Because the coating goes on before the screw ever reaches site, there is no touching up, no spray cans and no colour drift between batches. The finish that leaves the box is the finish that stays on the roof.
Stocked as one of six core RoofingPro colours, with additional RAL references coated to order.
Site Applications
Suited to the following work:
- Profiled steel and aluminium roof sheeting onto light section steel framing
- Wall cladding and rainscreen installation on commercial and retail units
- Re-roofing and overcladding projects onto existing steel structures
- Weatherproof fixing of coloured metal sheets where the seal is load-bearing
- Agricultural, equestrian and storage building envelopes
Typical fixing centres: 300mm - 500mm at sheet ends and 500mm - 1000mm at intermediate purlins (subject to sheet profile and wind loading).
Specification
Full technical specification for the RoofingPro™ RS50:
| Size | 5.5mm x 50mm |
| Head Type | Hex |
| Socket Size | 8mm |
| Point Type | Self-Drilling No.3 |
| Thread Type | 60° Self-Tapping |
| Effective Thread Length | 35mm |
| EPDM Washer | 16mm |
| FW Ø | 11mm |
| Max Drilling Thickness | 5mm |
| Material | Case & Core Hardened Carbon Steel |
| Substrate | Steel |
| Shank Finish | Bright Zinc Plated |
| Head & Washer Finish | Powder Coated |
| Colour | RAL 9005 Jet Black |
Frequently Asked Questions
Do these screws need a pilot hole?
No. The No.3 self-drilling point cuts its own hole through steel up to 5mm thick, so roofing sheets can be fixed directly to purlins and rails in a single operation.
Is the EPDM washer coloured as well as the head?
Yes. Both the hex head and the bonded EPDM sealing washer are powder coated in RAL 9005 Jet Black. Most coloured roofing screws leave the washer black.
What thickness of steel will they drill?
Up to 5mm maximum drilling thickness. That covers light section steel purlins, sheeting rails and most portal frame secondary steelwork.
What tool do I need to drive them?
An 8mm socket or nut driver in a variable-speed driver. Set the clutch so the washer compresses and seals without being crushed.
Powder Coated Roofing Screws
Every RoofingPro screw is powder coated at our own facility. That control is what lets us match a RAL reference properly and coat the washer alongside the head, rather than shipping a coloured head with a black rubber ring underneath it.
The powder is charged, applied dry and cured to a bonded finish. It resists chipping under the socket, resists chalking under UV and stays colourfast through the weathering cycles a metal roof sees every year.
Benefits of powder coated roofing screws:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other RoofingPro RS50 Colour Options
RoofingPro™ RS50 roofing screws are stocked in six core RAL finishes matched to the most widely specified roofing and cladding colours, with further RAL references powder coated to order.
Description
Fixing a coloured roof sheet with an uncoated screw undoes the specification at the last step. The RoofingPro™ RS50 solves that: a 50mm x 5.5mm hex head self-drilling roofing screw with the head and the EPDM washer powder coated in RAL 9005 Jet Black.
The self-drilling No.3 point removes the pre-drilling step entirely. Drive straight into light section steel up to 5mm and the screw cuts, taps and seats in one operation, with 35mm of effective thread engaging behind the sheet.
At 50mm it suits deeper profiles and insulated build-ups where a shorter fixing runs out of thread before it reaches the steel. Box profile, corrugated and trapezoidal sheets all sit comfortably within its range.
Specified across roofing, cladding, rainscreen and agricultural work, where hundreds of fixings across an elevation either vanish into the finish or advertise themselves.
Colour Matched in RAL 9005 Jet Black
Black conceals weathering and staining better than any other finish, which makes it a common choice for rural and agricultural buildings where roofs are rarely cleaned. A matching black fixing keeps that low-maintenance logic intact.
Jet black has moved from agricultural sheeting into mainstream commercial and residential architecture. Black box profile roofs, dark standing seam, black rainscreen and contemporary barn conversions all specify RAL 9005. RAL 9005 Jet Black is a deep true black, applied here to both the hex head and the sealing washer.
Because the coating goes on before the screw ever reaches site, there is no touching up, no spray cans and no colour drift between batches. The finish that leaves the box is the finish that stays on the roof.
Stocked as one of six core RoofingPro colours, with additional RAL references coated to order.
Site Applications
Suited to the following work:
- Profiled steel and aluminium roof sheeting onto light section steel framing
- Wall cladding and rainscreen installation on commercial and retail units
- Re-roofing and overcladding projects onto existing steel structures
- Weatherproof fixing of coloured metal sheets where the seal is load-bearing
- Agricultural, equestrian and storage building envelopes
Typical fixing centres: 300mm - 500mm at sheet ends and 500mm - 1000mm at intermediate purlins (subject to sheet profile and wind loading).
Specification
Full technical specification for the RoofingPro™ RS50:
| Size | 5.5mm x 50mm |
| Head Type | Hex |
| Socket Size | 8mm |
| Point Type | Self-Drilling No.3 |
| Thread Type | 60° Self-Tapping |
| Effective Thread Length | 35mm |
| EPDM Washer | 16mm |
| FW Ø | 11mm |
| Max Drilling Thickness | 5mm |
| Material | Case & Core Hardened Carbon Steel |
| Substrate | Steel |
| Shank Finish | Bright Zinc Plated |
| Head & Washer Finish | Powder Coated |
| Colour | RAL 9005 Jet Black |
Frequently Asked Questions
Do these screws need a pilot hole?
No. The No.3 self-drilling point cuts its own hole through steel up to 5mm thick, so roofing sheets can be fixed directly to purlins and rails in a single operation.
Is the EPDM washer coloured as well as the head?
Yes. Both the hex head and the bonded EPDM sealing washer are powder coated in RAL 9005 Jet Black. Most coloured roofing screws leave the washer black.
What thickness of steel will they drill?
Up to 5mm maximum drilling thickness. That covers light section steel purlins, sheeting rails and most portal frame secondary steelwork.
What tool do I need to drive them?
An 8mm socket or nut driver in a variable-speed driver. Set the clutch so the washer compresses and seals without being crushed.
Powder Coated Roofing Screws
Every RoofingPro screw is powder coated at our own facility. That control is what lets us match a RAL reference properly and coat the washer alongside the head, rather than shipping a coloured head with a black rubber ring underneath it.
The powder is charged, applied dry and cured to a bonded finish. It resists chipping under the socket, resists chalking under UV and stays colourfast through the weathering cycles a metal roof sees every year.
Benefits of powder coated roofing screws:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other RoofingPro RS50 Colour Options
RoofingPro™ RS50 roofing screws are stocked in six core RAL finishes matched to the most widely specified roofing and cladding colours, with further RAL references powder coated to order.
Delivery & Shipping Terms
1. Where We Deliver
We currently ship to addresses within the United Kingdom only.
If you require delivery outside the UK, this must be arranged in advance. Where international delivery is agreed:
- You are fully responsible for all import duties, taxes, and customs charges, including any fees for customs paperwork.
- RALfixings accepts no liability for customs delays or additional costs associated with international shipments.
2. Delivery Timescales
Our products fall into two categories: in-stock and made-to-order (bespoke) items.
In-Stock Items
- Usually dispatched within 1–2 working days.
- Delivery typically takes 1–3 working days from the dispatch date.
Powder Coated / Made-to-Order Items
- Typically dispatched within 3–5 working days, but may take up to 10 working days during busy periods.
- Delivery typically takes 1–3 working days after dispatch.
All quoted times are estimates, not guarantees. Delivery times may be affected by stock availability, courier performance, weather, or other factors beyond our control.
3. Shipping Costs
- Shipping charges are based on order weight and destination.
- The exact shipping cost will be shown at checkout before payment.
- Additional shipping charges may apply to remote areas or multiple consignments.
4. Tracking and Responsibility
All orders are shipped via tracked courier services to ensure maximum security and visibility.
Once your order has been dispatched:
- You will receive an order dispatch email letting you know your order is on it's way, and another email from Royal Mail or the chosen courier with your tracking information. If you have supplied a UK phone number you may also recieve a tracking text from Royal Mail or the chosen courier.
- Responsibility for the goods passes to you upon dispatch.
- RALfixings is not liable for loss or damage in transit. Please contact the courier directly with your tracking number if issues arise.
5. Missed Deliveries or Delays
If your parcel cannot be delivered and is returned to us:
- We can resend it, but an additional delivery charge will apply.
- We are not responsible for courier delays or failed delivery attempts.
If your order hasn’t arrived within the estimated delivery window, please contact us as soon as possible at info@ralfixings.com.
Order Amendments & Cancellations
Changing an Order
We begin preparing orders quickly — especially made-to-order items.
- If you need to amend your order, please contact us within 24 hours or as soon as possible.
- After this period, it may be too late to make changes as your order may already be in production or dispatched.
- If you wish to add items, and your order hasn’t yet shipped, we may be able to combine them. Otherwise, a new order (and delivery charge) will apply.
Returns & Refunds
1. Your Right to Cancel – B2C Customers Only
Under the Consumer Contracts Regulations 2013, B2C customers have the right to cancel certain purchases made online within 14 days of delivery.
However, this does not apply to:
- Bespoke or made-to-order goods — including all powder coated screws and fixings manufactured specifically for your order.
If your order includes stocked items only, you may cancel and return those goods within 14 days of receipt. You must:
- Inform us in writing via email within 14 days.
- Return the goods at your own cost, in their original condition and packaging.
- Ensure the items are received by us within 30 days of delivery.
We recommend using a tracked and insured delivery service for any returns, as we are not responsible for items lost or damaged in return transit.
2. Faulty or Incorrect Items
If you receive goods that are:
- Faulty, or
- Incorrectly supplied (e.g. wrong size, colour, or product)
Please notify us within 30 days of receiving the goods.
We will:
- Replace the items where possible, or
- Issue a refund if replacement is not appropriate.
You may be asked to return the faulty items for inspection before a refund or exchange is processed.
Once screws have been installed or used, they cannot be returned or refunded, unless faulty.
3. Refund Processing
- Refunds (where applicable) are processed within 5 working days of receiving the returned items.
- Refunds are only issued to the original payment method.
- Refunds cannot be made to a different card or by other means.
- Delivery charges are non-refundable unless your entire order was cancelled before dispatch or the goods were faulty or incorrect.
Returns Address
To return items, please send them to:
FAO: Jon Lett
RALfixings Ltd
26a Queens Road
Knaphill
Surrey
GU212DX
B2B Orders & Restocking Fee
The rights described above apply primarily to consumers (B2C). If you are a business customer (B2B), statutory cancellation rights under the Consumer Contracts Regulations do not apply.
Returns from business customers are accepted at our sole discretion, and only if agreed in writing before the goods are returned.
All authorised B2B returns are subject to a 15% restocking fee, which will be deducted from the final refund amount. This fee covers the cost of inspection, repackaging, and administrative processing.
Returned goods must be:
- In resaleable, unused condition
- In their original packaging
- Returned at the buyer’s expense via a tracked delivery service
We do not accept returns of any bespoke or made-to-order products under any circumstances unless the item is faulty.
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Description
Fixing a coloured roof sheet with an uncoated screw undoes the specification at the last step. The RoofingPro™ RS50 solves that: a 50mm x 5.5mm hex head self-drilling roofing screw with the head and the EPDM washer powder coated in RAL 9005 Jet Black.
The self-drilling No.3 point removes the pre-drilling step entirely. Drive straight into light section steel up to 5mm and the screw cuts, taps and seats in one operation, with 35mm of effective thread engaging behind the sheet.
At 50mm it suits deeper profiles and insulated build-ups where a shorter fixing runs out of thread before it reaches the steel. Box profile, corrugated and trapezoidal sheets all sit comfortably within its range.
Specified across roofing, cladding, rainscreen and agricultural work, where hundreds of fixings across an elevation either vanish into the finish or advertise themselves.
Colour Matched in RAL 9005 Jet Black
Black conceals weathering and staining better than any other finish, which makes it a common choice for rural and agricultural buildings where roofs are rarely cleaned. A matching black fixing keeps that low-maintenance logic intact.
Jet black has moved from agricultural sheeting into mainstream commercial and residential architecture. Black box profile roofs, dark standing seam, black rainscreen and contemporary barn conversions all specify RAL 9005. RAL 9005 Jet Black is a deep true black, applied here to both the hex head and the sealing washer.
Because the coating goes on before the screw ever reaches site, there is no touching up, no spray cans and no colour drift between batches. The finish that leaves the box is the finish that stays on the roof.
Stocked as one of six core RoofingPro colours, with additional RAL references coated to order.
Site Applications
Suited to the following work:
- Profiled steel and aluminium roof sheeting onto light section steel framing
- Wall cladding and rainscreen installation on commercial and retail units
- Re-roofing and overcladding projects onto existing steel structures
- Weatherproof fixing of coloured metal sheets where the seal is load-bearing
- Agricultural, equestrian and storage building envelopes
Typical fixing centres: 300mm - 500mm at sheet ends and 500mm - 1000mm at intermediate purlins (subject to sheet profile and wind loading).
Specification
Full technical specification for the RoofingPro™ RS50:
| Size | 5.5mm x 50mm |
| Head Type | Hex |
| Socket Size | 8mm |
| Point Type | Self-Drilling No.3 |
| Thread Type | 60° Self-Tapping |
| Effective Thread Length | 35mm |
| EPDM Washer | 16mm |
| FW Ø | 11mm |
| Max Drilling Thickness | 5mm |
| Material | Case & Core Hardened Carbon Steel |
| Substrate | Steel |
| Shank Finish | Bright Zinc Plated |
| Head & Washer Finish | Powder Coated |
| Colour | RAL 9005 Jet Black |
Frequently Asked Questions
Do these screws need a pilot hole?
No. The No.3 self-drilling point cuts its own hole through steel up to 5mm thick, so roofing sheets can be fixed directly to purlins and rails in a single operation.
Is the EPDM washer coloured as well as the head?
Yes. Both the hex head and the bonded EPDM sealing washer are powder coated in RAL 9005 Jet Black. Most coloured roofing screws leave the washer black.
What thickness of steel will they drill?
Up to 5mm maximum drilling thickness. That covers light section steel purlins, sheeting rails and most portal frame secondary steelwork.
What tool do I need to drive them?
An 8mm socket or nut driver in a variable-speed driver. Set the clutch so the washer compresses and seals without being crushed.
Powder Coated Roofing Screws
Every RoofingPro screw is powder coated at our own facility. That control is what lets us match a RAL reference properly and coat the washer alongside the head, rather than shipping a coloured head with a black rubber ring underneath it.
The powder is charged, applied dry and cured to a bonded finish. It resists chipping under the socket, resists chalking under UV and stays colourfast through the weathering cycles a metal roof sees every year.
Benefits of powder coated roofing screws:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other RoofingPro RS50 Colour Options
RoofingPro™ RS50 roofing screws are stocked in six core RAL finishes matched to the most widely specified roofing and cladding colours, with further RAL references powder coated to order.
Recommended applications
Designed for metal envelope work: fixing box profile, corrugated and trapezoidal sheets to steel purlins and sheeting rails. Head and EPDM washer are both powder coated, so the fixing reads as part of the panel rather than sitting on top of it.
Self-drilling into light section steel up to 5mm, no pilot hole required. Use an 8mm nut setter at controlled speed and set the clutch so the washer seals without being crushed.
Not suitable for fixing into timber — the self-drilling point is designed for steel substrates. For timber framing see our self-tapping wafer head range.
Suitable for
In Stock
| Bulk Discount | ||
|---|---|---|
| 200+ | ||
| 500+ | ||
| 1000+ | ||
| 2000+ | ||
| 5000+ | ||