Description
A 50mm x 5.5mm hex head self-drilling roofing screw, powder coated in RAL 9010 Pure White across both the head and the bonded EPDM washer. The RoofingPro™ RS50 fixes metal roofing and cladding sheets to steel framing without pre-drilling.
The 16mm EPDM washer compresses under the hex head as the screw seats, forming a permanent weather seal around the fixing hole. That seal is what keeps a metal roof watertight for its design life, and it is the part most often overlooked when a fixing is chosen on price.
Driven with an 8mm socket at high torque without cam-out, the hex drive suits repetitive overhead and rope-access work where a recessed drive would slip and round.
Supplied by the unit with quantity breaks, so a small repair batch and a full roof order come from the same listing.
Colour Matched in RAL 9010 Pure White
The RS50 in RAL 9010 Pure White is finished in a soft slightly warm white, powder coated across the hex head and the EPDM washer together.
Pure white is the standard interior and soffit finish across insulated panel systems, and appears widely on food production units, cold stores, warehousing and light industrial envelopes where a clean, bright surface is required.
RAL 9010 is the white specified when a warmer, softer tone is wanted rather than a stark commercial white. It is regularly paired with grey or silver profiles as the underside and trim colour.
Part of the six-colour RoofingPro core range held in stock, with a wider RAL palette available to order for matched schemes.
Site Applications
Specified across metal envelope work where the fixing is visible and the seal matters:
- Fixing profiled metal roofing sheets to steel purlins on industrial and commercial buildings
- Securing box profile and corrugated cladding to steel sheeting rails
- Agricultural roofing and barn cladding onto portal frame steelwork
- Fixing flashings, ridge caps, barge boards and eaves trims
- Insulated panel and composite sheet fixing where a deeper build-up needs the extra length
Typical fixing centres: 300mm - 500mm at sheet ends and 500mm - 1000mm at intermediate purlins (subject to sheet profile and wind loading).
Specification
Manufactured to the following specification:
| 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 9010 Pure White |
Frequently Asked Questions
What size socket fits the hex head?
8mm. Use a nut setter in a variable-speed driver and stop as soon as the EPDM washer has compressed evenly around the head.
Will these fix through insulation?
The 50mm length gives 35mm of effective thread, which suits deeper profiles and modest insulated build-ups. For thicker composite panels use the 70mm.
Is the washer really coated, or just the head?
Both. The hex head and the bonded EPDM washer are powder coated together in RAL 9010 Pure White, so there is no black rubber ring showing under a coloured head.
Can they be used on timber purlins?
No. The self-drilling point is designed for steel. For timber substrates you need a self-tapping fixing with a coarser thread profile.
Powder Coated Roofing Screws
RALfixings specialises in colour-matched visible fixings. Every RoofingPro screw is powder coated in-house, which lets us hold a genuine RAL match rather than an approximation, and lets us coat the EPDM washer as well as the head.
Powder coating is applied electrostatically as a dry powder and then cured, forming a bonded finish rather than a surface film. It will not chip off the hex flats under a socket the way wet paint does, and it holds colour through UV exposure far longer than a sprayed finish.
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
A 50mm x 5.5mm hex head self-drilling roofing screw, powder coated in RAL 9010 Pure White across both the head and the bonded EPDM washer. The RoofingPro™ RS50 fixes metal roofing and cladding sheets to steel framing without pre-drilling.
The 16mm EPDM washer compresses under the hex head as the screw seats, forming a permanent weather seal around the fixing hole. That seal is what keeps a metal roof watertight for its design life, and it is the part most often overlooked when a fixing is chosen on price.
Driven with an 8mm socket at high torque without cam-out, the hex drive suits repetitive overhead and rope-access work where a recessed drive would slip and round.
Supplied by the unit with quantity breaks, so a small repair batch and a full roof order come from the same listing.
Colour Matched in RAL 9010 Pure White
The RS50 in RAL 9010 Pure White is finished in a soft slightly warm white, powder coated across the hex head and the EPDM washer together.
Pure white is the standard interior and soffit finish across insulated panel systems, and appears widely on food production units, cold stores, warehousing and light industrial envelopes where a clean, bright surface is required.
RAL 9010 is the white specified when a warmer, softer tone is wanted rather than a stark commercial white. It is regularly paired with grey or silver profiles as the underside and trim colour.
Part of the six-colour RoofingPro core range held in stock, with a wider RAL palette available to order for matched schemes.
Site Applications
Specified across metal envelope work where the fixing is visible and the seal matters:
- Fixing profiled metal roofing sheets to steel purlins on industrial and commercial buildings
- Securing box profile and corrugated cladding to steel sheeting rails
- Agricultural roofing and barn cladding onto portal frame steelwork
- Fixing flashings, ridge caps, barge boards and eaves trims
- Insulated panel and composite sheet fixing where a deeper build-up needs the extra length
Typical fixing centres: 300mm - 500mm at sheet ends and 500mm - 1000mm at intermediate purlins (subject to sheet profile and wind loading).
Specification
Manufactured to the following specification:
| 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 9010 Pure White |
Frequently Asked Questions
What size socket fits the hex head?
8mm. Use a nut setter in a variable-speed driver and stop as soon as the EPDM washer has compressed evenly around the head.
Will these fix through insulation?
The 50mm length gives 35mm of effective thread, which suits deeper profiles and modest insulated build-ups. For thicker composite panels use the 70mm.
Is the washer really coated, or just the head?
Both. The hex head and the bonded EPDM washer are powder coated together in RAL 9010 Pure White, so there is no black rubber ring showing under a coloured head.
Can they be used on timber purlins?
No. The self-drilling point is designed for steel. For timber substrates you need a self-tapping fixing with a coarser thread profile.
Powder Coated Roofing Screws
RALfixings specialises in colour-matched visible fixings. Every RoofingPro screw is powder coated in-house, which lets us hold a genuine RAL match rather than an approximation, and lets us coat the EPDM washer as well as the head.
Powder coating is applied electrostatically as a dry powder and then cured, forming a bonded finish rather than a surface film. It will not chip off the hex flats under a socket the way wet paint does, and it holds colour through UV exposure far longer than a sprayed finish.
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.
SIMPLE TEST - CAN YOU SEE THIS?
If you see this, the partial is loading.
Description
A 50mm x 5.5mm hex head self-drilling roofing screw, powder coated in RAL 9010 Pure White across both the head and the bonded EPDM washer. The RoofingPro™ RS50 fixes metal roofing and cladding sheets to steel framing without pre-drilling.
The 16mm EPDM washer compresses under the hex head as the screw seats, forming a permanent weather seal around the fixing hole. That seal is what keeps a metal roof watertight for its design life, and it is the part most often overlooked when a fixing is chosen on price.
Driven with an 8mm socket at high torque without cam-out, the hex drive suits repetitive overhead and rope-access work where a recessed drive would slip and round.
Supplied by the unit with quantity breaks, so a small repair batch and a full roof order come from the same listing.
Colour Matched in RAL 9010 Pure White
The RS50 in RAL 9010 Pure White is finished in a soft slightly warm white, powder coated across the hex head and the EPDM washer together.
Pure white is the standard interior and soffit finish across insulated panel systems, and appears widely on food production units, cold stores, warehousing and light industrial envelopes where a clean, bright surface is required.
RAL 9010 is the white specified when a warmer, softer tone is wanted rather than a stark commercial white. It is regularly paired with grey or silver profiles as the underside and trim colour.
Part of the six-colour RoofingPro core range held in stock, with a wider RAL palette available to order for matched schemes.
Site Applications
Specified across metal envelope work where the fixing is visible and the seal matters:
- Fixing profiled metal roofing sheets to steel purlins on industrial and commercial buildings
- Securing box profile and corrugated cladding to steel sheeting rails
- Agricultural roofing and barn cladding onto portal frame steelwork
- Fixing flashings, ridge caps, barge boards and eaves trims
- Insulated panel and composite sheet fixing where a deeper build-up needs the extra length
Typical fixing centres: 300mm - 500mm at sheet ends and 500mm - 1000mm at intermediate purlins (subject to sheet profile and wind loading).
Specification
Manufactured to the following specification:
| 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 9010 Pure White |
Frequently Asked Questions
What size socket fits the hex head?
8mm. Use a nut setter in a variable-speed driver and stop as soon as the EPDM washer has compressed evenly around the head.
Will these fix through insulation?
The 50mm length gives 35mm of effective thread, which suits deeper profiles and modest insulated build-ups. For thicker composite panels use the 70mm.
Is the washer really coated, or just the head?
Both. The hex head and the bonded EPDM washer are powder coated together in RAL 9010 Pure White, so there is no black rubber ring showing under a coloured head.
Can they be used on timber purlins?
No. The self-drilling point is designed for steel. For timber substrates you need a self-tapping fixing with a coarser thread profile.
Powder Coated Roofing Screws
RALfixings specialises in colour-matched visible fixings. Every RoofingPro screw is powder coated in-house, which lets us hold a genuine RAL match rather than an approximation, and lets us coat the EPDM washer as well as the head.
Powder coating is applied electrostatically as a dry powder and then cured, forming a bonded finish rather than a surface film. It will not chip off the hex flats under a socket the way wet paint does, and it holds colour through UV exposure far longer than a sprayed finish.
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
Specified for roofing and cladding sheet fixing onto light section steel, where the fixing is visible and the seal around the hole is doing real work. The 16mm bonded EPDM washer forms a permanent weather seal as the screw seats.
The No.3 drill point handles steel up to 5mm thick. Drive with an 8mm socket, controlled speed, and stop at even washer compression. Do not overdrive.
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+ | ||