Description
Dahlia yellow sits in the warm, amber-influenced end of the yellow family. These 25mm x 4.2mm flange head self tapping screws in RAL 1033 Dahlia Yellow are powder coated to match the rich, golden-orange yellow used across architectural cladding, leisure and retail installations and decorative hoarding schemes where a warm, saturated yellow has been specified. On panel systems in this colour range, a zinc or neutral fixing reads immediately as a cold intrusion against a warm surface.
At 25mm, these screws carry the thread engagement needed where the substrate has depth behind the panel face. Timber batten frames on construction hoarding, composite panel systems with a backing layer and installations subject to wind loading all require a screw that reaches through the panel and bites firmly into the frame below. The 25mm length is the correct specification for these conditions, not a longer-than-necessary alternative to a shorter screw.
The flange head spreads clamping force across a wide bearing footprint, holding the panel flat without the point loading that pan head or countersunk designs apply to the panel surface. On ACM sheet, Foamex and rigid composite boards this prevents dimpling and surface stress at the fixing point. The Pozi PZ2 recess drives positively with minimal cam-out, keeping the head surface and finish intact after installation.
The 60° self-tapping thread and AB point cut directly into light-gauge steel and sheet metal frames without pre-drilling, and pull cleanly through softwood timber battens with strong holding power in both substrate types.
RAL 1033 Dahlia Yellow
RAL 1033 Dahlia Yellow is a warm, deep yellow with a strong orange undertone. It is noticeably richer and more amber in character than the clean mid-tone of RAL 1023 Traffic Yellow or the bright lime-influenced chroma of RAL 1016 Sulphur Yellow. The warmth in this colour places it closer to golden amber than to a pure yellow, which makes it a natural fit for leisure, hospitality and retail environments where a vibrant but inviting yellow is required rather than a clinical or high-visibility one.
This colour appears on branded hoarding installations, retail and food and beverage fascia systems, leisure facility cladding and architectural feature panels where the warmth of the tone is a deliberate design choice. On these surfaces, a zinc screw head introduces a cold, metallic contrast that a colour-matched fixing removes entirely. Each head is powder coated to the exact RAL 1033 Classic standard, with consistent colour across the batch.
The orange influence in RAL 1033 also means it sits naturally alongside timber-effect panels and natural material facades where a warm accent colour has been incorporated into the design. Specifiers working across these project types increasingly treat colour-matched fixings as a baseline requirement rather than a finishing touch.
All RAL colours in the RALfixings range are held in stock for immediate dispatch, without special order lead times on live project schedules.
Suitable Applications
25mm painted flange head screws in RAL 1033 Dahlia Yellow are used across:
- Branded hoarding installations and construction site panels in warm yellow colour schemes
- Retail, food and beverage and leisure fascia systems specified in RAL 1033
- ACM and Dibond™ panel installations on deeper substructures requiring extended thread engagement
- Architectural feature cladding panels where a warm, amber-toned yellow forms part of the design palette
- Signage trays, display structures and commercial fit-out panels finished in dahlia yellow
Pack Sizes Available
Supplied in trade-ready packs of:
- 100
- 200
- 500
- 1000
- 2000
- 5000
Specification
| Length | 25mm |
| Thread Diameter | 4.2mm |
| Gauge | 8 |
| Head Type | Flange Head |
| Thread Type | 60° Self-Tapping |
| Point Type | AB Point |
| Recess | Pozi PZ2 |
| Material | Carbon Steel (Bright Zinc Plated) |
| Head Finish | Powder Coated RAL 1033 Dahlia Yellow |
| Standard | BS 4174:1972 |
| Substrates | Steel, Thin Sheet Metal, Timber |
Frequently Asked Questions
How does RAL 1033 Dahlia Yellow differ from RAL 1023 Traffic Yellow?
RAL 1023 Traffic Yellow is a clean, balanced mid-tone yellow standardised for road infrastructure and safety applications. RAL 1033 Dahlia Yellow carries a strong orange-amber undertone that gives it a noticeably warmer, richer character. If your panels read as a golden or amber-toned yellow rather than a pure or cool yellow, RAL 1033 is the closer specification. The two colours are distinct enough that substituting one for the other will produce a visible mismatch on the finished installation.
When should I use 25mm screws instead of 19mm?
The 25mm length provides additional thread engagement for thicker substrates, deeper timber battens and double-skin panel assemblies. Where the 19mm version suits single-skin sheet metal connections, the 25mm delivers extra grip and pull-out resistance when the screw needs to pass through the panel face and reach solidly into the frame behind.
Can these be used to fix hoarding panels to timber frames?
Yes. The 25mm length and self-tapping AB point thread make these screws well suited to fixing panels to the timber battens and stud frames used on construction hoarding. The flange head distributes clamping force across a wide footprint to hold the panel flat, while the extra length provides firm engagement into the timber behind.
How quickly can you deliver?
RAL 1033 Dahlia Yellow is held in stock. Most orders dispatch next working day on a tracked 24-hour service. Larger volume orders typically ship within 3 to 5 working days.
Powder Coated Screws
RALfixings exists to give contractors and specifiers access to colour-matched visible fixings without painting screws on site or accepting a tone that does not match the panel system. Every screw in the range is powder coated in-house to exact RAL Classic colour standards, with consistent batch-to-batch accuracy across every pack size.
The electrostatic powder coating process deposits a fine layer of thermoset pigment onto the screw head, which is then cured under heat to form a hard, permanently bonded shell. This finish outperforms wet paint in adhesion, hardness, chip resistance, UV stability and colour consistency across production runs.
Benefits of powder coated self tapping screws:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other Colour Options
These 25mm x 4.2mm painted flange head self tapping screws are available in over 60 colour-matched RAL finishes for hoarding panels, signage and visible metalwork.
Description
Dahlia yellow sits in the warm, amber-influenced end of the yellow family. These 25mm x 4.2mm flange head self tapping screws in RAL 1033 Dahlia Yellow are powder coated to match the rich, golden-orange yellow used across architectural cladding, leisure and retail installations and decorative hoarding schemes where a warm, saturated yellow has been specified. On panel systems in this colour range, a zinc or neutral fixing reads immediately as a cold intrusion against a warm surface.
At 25mm, these screws carry the thread engagement needed where the substrate has depth behind the panel face. Timber batten frames on construction hoarding, composite panel systems with a backing layer and installations subject to wind loading all require a screw that reaches through the panel and bites firmly into the frame below. The 25mm length is the correct specification for these conditions, not a longer-than-necessary alternative to a shorter screw.
The flange head spreads clamping force across a wide bearing footprint, holding the panel flat without the point loading that pan head or countersunk designs apply to the panel surface. On ACM sheet, Foamex and rigid composite boards this prevents dimpling and surface stress at the fixing point. The Pozi PZ2 recess drives positively with minimal cam-out, keeping the head surface and finish intact after installation.
The 60° self-tapping thread and AB point cut directly into light-gauge steel and sheet metal frames without pre-drilling, and pull cleanly through softwood timber battens with strong holding power in both substrate types.
RAL 1033 Dahlia Yellow
RAL 1033 Dahlia Yellow is a warm, deep yellow with a strong orange undertone. It is noticeably richer and more amber in character than the clean mid-tone of RAL 1023 Traffic Yellow or the bright lime-influenced chroma of RAL 1016 Sulphur Yellow. The warmth in this colour places it closer to golden amber than to a pure yellow, which makes it a natural fit for leisure, hospitality and retail environments where a vibrant but inviting yellow is required rather than a clinical or high-visibility one.
This colour appears on branded hoarding installations, retail and food and beverage fascia systems, leisure facility cladding and architectural feature panels where the warmth of the tone is a deliberate design choice. On these surfaces, a zinc screw head introduces a cold, metallic contrast that a colour-matched fixing removes entirely. Each head is powder coated to the exact RAL 1033 Classic standard, with consistent colour across the batch.
The orange influence in RAL 1033 also means it sits naturally alongside timber-effect panels and natural material facades where a warm accent colour has been incorporated into the design. Specifiers working across these project types increasingly treat colour-matched fixings as a baseline requirement rather than a finishing touch.
All RAL colours in the RALfixings range are held in stock for immediate dispatch, without special order lead times on live project schedules.
Suitable Applications
25mm painted flange head screws in RAL 1033 Dahlia Yellow are used across:
- Branded hoarding installations and construction site panels in warm yellow colour schemes
- Retail, food and beverage and leisure fascia systems specified in RAL 1033
- ACM and Dibond™ panel installations on deeper substructures requiring extended thread engagement
- Architectural feature cladding panels where a warm, amber-toned yellow forms part of the design palette
- Signage trays, display structures and commercial fit-out panels finished in dahlia yellow
Pack Sizes Available
Supplied in trade-ready packs of:
- 100
- 200
- 500
- 1000
- 2000
- 5000
Specification
| Length | 25mm |
| Thread Diameter | 4.2mm |
| Gauge | 8 |
| Head Type | Flange Head |
| Thread Type | 60° Self-Tapping |
| Point Type | AB Point |
| Recess | Pozi PZ2 |
| Material | Carbon Steel (Bright Zinc Plated) |
| Head Finish | Powder Coated RAL 1033 Dahlia Yellow |
| Standard | BS 4174:1972 |
| Substrates | Steel, Thin Sheet Metal, Timber |
Frequently Asked Questions
How does RAL 1033 Dahlia Yellow differ from RAL 1023 Traffic Yellow?
RAL 1023 Traffic Yellow is a clean, balanced mid-tone yellow standardised for road infrastructure and safety applications. RAL 1033 Dahlia Yellow carries a strong orange-amber undertone that gives it a noticeably warmer, richer character. If your panels read as a golden or amber-toned yellow rather than a pure or cool yellow, RAL 1033 is the closer specification. The two colours are distinct enough that substituting one for the other will produce a visible mismatch on the finished installation.
When should I use 25mm screws instead of 19mm?
The 25mm length provides additional thread engagement for thicker substrates, deeper timber battens and double-skin panel assemblies. Where the 19mm version suits single-skin sheet metal connections, the 25mm delivers extra grip and pull-out resistance when the screw needs to pass through the panel face and reach solidly into the frame behind.
Can these be used to fix hoarding panels to timber frames?
Yes. The 25mm length and self-tapping AB point thread make these screws well suited to fixing panels to the timber battens and stud frames used on construction hoarding. The flange head distributes clamping force across a wide footprint to hold the panel flat, while the extra length provides firm engagement into the timber behind.
How quickly can you deliver?
RAL 1033 Dahlia Yellow is held in stock. Most orders dispatch next working day on a tracked 24-hour service. Larger volume orders typically ship within 3 to 5 working days.
Powder Coated Screws
RALfixings exists to give contractors and specifiers access to colour-matched visible fixings without painting screws on site or accepting a tone that does not match the panel system. Every screw in the range is powder coated in-house to exact RAL Classic colour standards, with consistent batch-to-batch accuracy across every pack size.
The electrostatic powder coating process deposits a fine layer of thermoset pigment onto the screw head, which is then cured under heat to form a hard, permanently bonded shell. This finish outperforms wet paint in adhesion, hardness, chip resistance, UV stability and colour consistency across production runs.
Benefits of powder coated self tapping screws:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other Colour Options
These 25mm x 4.2mm painted flange head self tapping screws are available in over 60 colour-matched RAL finishes for hoarding panels, signage and visible metalwork.
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
Dahlia yellow sits in the warm, amber-influenced end of the yellow family. These 25mm x 4.2mm flange head self tapping screws in RAL 1033 Dahlia Yellow are powder coated to match the rich, golden-orange yellow used across architectural cladding, leisure and retail installations and decorative hoarding schemes where a warm, saturated yellow has been specified. On panel systems in this colour range, a zinc or neutral fixing reads immediately as a cold intrusion against a warm surface.
At 25mm, these screws carry the thread engagement needed where the substrate has depth behind the panel face. Timber batten frames on construction hoarding, composite panel systems with a backing layer and installations subject to wind loading all require a screw that reaches through the panel and bites firmly into the frame below. The 25mm length is the correct specification for these conditions, not a longer-than-necessary alternative to a shorter screw.
The flange head spreads clamping force across a wide bearing footprint, holding the panel flat without the point loading that pan head or countersunk designs apply to the panel surface. On ACM sheet, Foamex and rigid composite boards this prevents dimpling and surface stress at the fixing point. The Pozi PZ2 recess drives positively with minimal cam-out, keeping the head surface and finish intact after installation.
The 60° self-tapping thread and AB point cut directly into light-gauge steel and sheet metal frames without pre-drilling, and pull cleanly through softwood timber battens with strong holding power in both substrate types.
RAL 1033 Dahlia Yellow
RAL 1033 Dahlia Yellow is a warm, deep yellow with a strong orange undertone. It is noticeably richer and more amber in character than the clean mid-tone of RAL 1023 Traffic Yellow or the bright lime-influenced chroma of RAL 1016 Sulphur Yellow. The warmth in this colour places it closer to golden amber than to a pure yellow, which makes it a natural fit for leisure, hospitality and retail environments where a vibrant but inviting yellow is required rather than a clinical or high-visibility one.
This colour appears on branded hoarding installations, retail and food and beverage fascia systems, leisure facility cladding and architectural feature panels where the warmth of the tone is a deliberate design choice. On these surfaces, a zinc screw head introduces a cold, metallic contrast that a colour-matched fixing removes entirely. Each head is powder coated to the exact RAL 1033 Classic standard, with consistent colour across the batch.
The orange influence in RAL 1033 also means it sits naturally alongside timber-effect panels and natural material facades where a warm accent colour has been incorporated into the design. Specifiers working across these project types increasingly treat colour-matched fixings as a baseline requirement rather than a finishing touch.
All RAL colours in the RALfixings range are held in stock for immediate dispatch, without special order lead times on live project schedules.
Suitable Applications
25mm painted flange head screws in RAL 1033 Dahlia Yellow are used across:
- Branded hoarding installations and construction site panels in warm yellow colour schemes
- Retail, food and beverage and leisure fascia systems specified in RAL 1033
- ACM and Dibond™ panel installations on deeper substructures requiring extended thread engagement
- Architectural feature cladding panels where a warm, amber-toned yellow forms part of the design palette
- Signage trays, display structures and commercial fit-out panels finished in dahlia yellow
Pack Sizes Available
Supplied in trade-ready packs of:
- 100
- 200
- 500
- 1000
- 2000
- 5000
Specification
| Length | 25mm |
| Thread Diameter | 4.2mm |
| Gauge | 8 |
| Head Type | Flange Head |
| Thread Type | 60° Self-Tapping |
| Point Type | AB Point |
| Recess | Pozi PZ2 |
| Material | Carbon Steel (Bright Zinc Plated) |
| Head Finish | Powder Coated RAL 1033 Dahlia Yellow |
| Standard | BS 4174:1972 |
| Substrates | Steel, Thin Sheet Metal, Timber |
Frequently Asked Questions
How does RAL 1033 Dahlia Yellow differ from RAL 1023 Traffic Yellow?
RAL 1023 Traffic Yellow is a clean, balanced mid-tone yellow standardised for road infrastructure and safety applications. RAL 1033 Dahlia Yellow carries a strong orange-amber undertone that gives it a noticeably warmer, richer character. If your panels read as a golden or amber-toned yellow rather than a pure or cool yellow, RAL 1033 is the closer specification. The two colours are distinct enough that substituting one for the other will produce a visible mismatch on the finished installation.
When should I use 25mm screws instead of 19mm?
The 25mm length provides additional thread engagement for thicker substrates, deeper timber battens and double-skin panel assemblies. Where the 19mm version suits single-skin sheet metal connections, the 25mm delivers extra grip and pull-out resistance when the screw needs to pass through the panel face and reach solidly into the frame behind.
Can these be used to fix hoarding panels to timber frames?
Yes. The 25mm length and self-tapping AB point thread make these screws well suited to fixing panels to the timber battens and stud frames used on construction hoarding. The flange head distributes clamping force across a wide footprint to hold the panel flat, while the extra length provides firm engagement into the timber behind.
How quickly can you deliver?
RAL 1033 Dahlia Yellow is held in stock. Most orders dispatch next working day on a tracked 24-hour service. Larger volume orders typically ship within 3 to 5 working days.
Powder Coated Screws
RALfixings exists to give contractors and specifiers access to colour-matched visible fixings without painting screws on site or accepting a tone that does not match the panel system. Every screw in the range is powder coated in-house to exact RAL Classic colour standards, with consistent batch-to-batch accuracy across every pack size.
The electrostatic powder coating process deposits a fine layer of thermoset pigment onto the screw head, which is then cured under heat to form a hard, permanently bonded shell. This finish outperforms wet paint in adhesion, hardness, chip resistance, UV stability and colour consistency across production runs.
Benefits of powder coated self tapping screws:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other Colour Options
These 25mm x 4.2mm painted flange head self tapping screws are available in over 60 colour-matched RAL finishes for hoarding panels, signage and visible metalwork.
Recommended applications
Designed for fixing ACM panels, composite cladding, and timber facade boards to timber battens and structural substrates. The powder-coated head matches your panel RAL precisely, eliminating visible bright metal fixings against the facade surface.
Pre-drilling recommended for hardwoods over 20mm density. The flange head spreads clamping force across a wider footprint, reducing surface pitting and preventing pull-through on thinner sheet materials.
Not recommended for fixing into steel framing — use our self-drilling range for steel substrates.
Suitable for
In Stock
*Min Order Quantity: 100
| Bulk Discount | ||
|---|---|---|
| 200+ | ||
| 500+ | ||
| 1000+ | ||
| 2000+ | ||
| 5000+ | ||
