Description
Black blue is a near-black with just enough blue character to read as something richer than a neutral dark. These 25mm x 4.2mm flange head self tapping screws in RAL 5004 Black Blue are powder coated to match the very dark, blue-influenced tone used across architectural cladding, premium signage and facade systems where the depth and subtlety of a near-black blue has been deliberately chosen over a flat black. On surfaces this dark, even a standard black fixing can introduce a tonal mismatch that is visible in raking light.
The 25mm length provides the thread engagement needed where the substrate carries depth behind the panel face. Timber batten hoarding frames, composite panels with a backing layer and exposed installations subject to wind loading all require a screw that passes through the panel and bites firmly into the frame below. The 25mm is the correct specification for these conditions.
The flange head spreads clamping force across a wide bearing footprint, preventing the point loading that narrower head designs apply to the panel skin. On ACM sheet, Foamex and rigid composite boards this prevents dimpling and surface stress at the fixing point. The Pozi PZ2 recess drives positively at installation torque with minimal cam-out, keeping the head surface and powder coat intact after fixing.
A 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 5004 Black Blue
RAL 5004 Black Blue sits at the darkest end of the RAL blue family. In most lighting conditions it reads as a very dark, slightly cool near-black. In strong directional light the blue undertone becomes visible, giving the surface a depth and richness that a flat black like RAL 9005 does not carry. This quality makes it a choice colour for architects and specifiers working with dark facade systems, premium cladding and high-end signage where the intention is a surface that rewards close attention rather than one that simply absorbs light.
The distinction between RAL 5004 and RAL 9005 Jet Black matters for fixing specification. A jet black screw head on a black blue panel surface introduces a warmer, flatter tone that reads as a different material in raking light. Each screw head is powder coated to the exact RAL 5004 Classic standard, ensuring the fixing carries the same cool, blue-influenced depth as the panel it sits on. On large dark facade panels and continuous cladding runs where fixings appear at regular intervals, that tonal match is what maintains the integrity of the surface.
RAL 5004 also appears on industrial structures and equipment housings where a very dark blue-black has been used as part of a colour scheme, and on architectural metalwork where the near-black quality of the tone sits alongside other dark materials as a deliberate palette choice.
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 5004 Black Blue are used across:
- Architectural facade cladding and feature panels specified in RAL 5004 Black Blue
- Premium signage trays and architectural lettering supports in near-black blue colour schemes
- ACM and Dibond™ panel installations on deeper substructures requiring extended thread engagement
- High-end retail and commercial fascia systems where a dark, sophisticated blue-black has been specified
- Industrial equipment housings and architectural metalwork finished in RAL 5004
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 5004 Black Blue |
| Standard | BS 4174:1972 |
| Substrates | Steel, Thin Sheet Metal, Timber |
Frequently Asked Questions
Can I use RAL 9005 Jet Black screws instead of RAL 5004 on a black blue panel?
It depends on the application. In diffuse or low light, RAL 5004 and RAL 9005 read as very similar dark tones and the difference may not be apparent. In stronger or raking light, the cool blue undertone of RAL 5004 becomes visible and a jet black fixing will read as a slightly warmer, flatter tone by comparison. On prestige installations, architectural facades and any surface where finish quality is held to a high standard, specifying RAL 5004 to match the panel is the correct approach. For utility applications where the distinction is unlikely to matter in practice, RAL 9005 may be an acceptable alternative.
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 5004 Black Blue 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 was built to solve one problem: giving 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
Black blue is a near-black with just enough blue character to read as something richer than a neutral dark. These 25mm x 4.2mm flange head self tapping screws in RAL 5004 Black Blue are powder coated to match the very dark, blue-influenced tone used across architectural cladding, premium signage and facade systems where the depth and subtlety of a near-black blue has been deliberately chosen over a flat black. On surfaces this dark, even a standard black fixing can introduce a tonal mismatch that is visible in raking light.
The 25mm length provides the thread engagement needed where the substrate carries depth behind the panel face. Timber batten hoarding frames, composite panels with a backing layer and exposed installations subject to wind loading all require a screw that passes through the panel and bites firmly into the frame below. The 25mm is the correct specification for these conditions.
The flange head spreads clamping force across a wide bearing footprint, preventing the point loading that narrower head designs apply to the panel skin. On ACM sheet, Foamex and rigid composite boards this prevents dimpling and surface stress at the fixing point. The Pozi PZ2 recess drives positively at installation torque with minimal cam-out, keeping the head surface and powder coat intact after fixing.
A 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 5004 Black Blue
RAL 5004 Black Blue sits at the darkest end of the RAL blue family. In most lighting conditions it reads as a very dark, slightly cool near-black. In strong directional light the blue undertone becomes visible, giving the surface a depth and richness that a flat black like RAL 9005 does not carry. This quality makes it a choice colour for architects and specifiers working with dark facade systems, premium cladding and high-end signage where the intention is a surface that rewards close attention rather than one that simply absorbs light.
The distinction between RAL 5004 and RAL 9005 Jet Black matters for fixing specification. A jet black screw head on a black blue panel surface introduces a warmer, flatter tone that reads as a different material in raking light. Each screw head is powder coated to the exact RAL 5004 Classic standard, ensuring the fixing carries the same cool, blue-influenced depth as the panel it sits on. On large dark facade panels and continuous cladding runs where fixings appear at regular intervals, that tonal match is what maintains the integrity of the surface.
RAL 5004 also appears on industrial structures and equipment housings where a very dark blue-black has been used as part of a colour scheme, and on architectural metalwork where the near-black quality of the tone sits alongside other dark materials as a deliberate palette choice.
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 5004 Black Blue are used across:
- Architectural facade cladding and feature panels specified in RAL 5004 Black Blue
- Premium signage trays and architectural lettering supports in near-black blue colour schemes
- ACM and Dibond™ panel installations on deeper substructures requiring extended thread engagement
- High-end retail and commercial fascia systems where a dark, sophisticated blue-black has been specified
- Industrial equipment housings and architectural metalwork finished in RAL 5004
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 5004 Black Blue |
| Standard | BS 4174:1972 |
| Substrates | Steel, Thin Sheet Metal, Timber |
Frequently Asked Questions
Can I use RAL 9005 Jet Black screws instead of RAL 5004 on a black blue panel?
It depends on the application. In diffuse or low light, RAL 5004 and RAL 9005 read as very similar dark tones and the difference may not be apparent. In stronger or raking light, the cool blue undertone of RAL 5004 becomes visible and a jet black fixing will read as a slightly warmer, flatter tone by comparison. On prestige installations, architectural facades and any surface where finish quality is held to a high standard, specifying RAL 5004 to match the panel is the correct approach. For utility applications where the distinction is unlikely to matter in practice, RAL 9005 may be an acceptable alternative.
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 5004 Black Blue 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 was built to solve one problem: giving 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.
SIMPLE TEST - CAN YOU SEE THIS?
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Description
Black blue is a near-black with just enough blue character to read as something richer than a neutral dark. These 25mm x 4.2mm flange head self tapping screws in RAL 5004 Black Blue are powder coated to match the very dark, blue-influenced tone used across architectural cladding, premium signage and facade systems where the depth and subtlety of a near-black blue has been deliberately chosen over a flat black. On surfaces this dark, even a standard black fixing can introduce a tonal mismatch that is visible in raking light.
The 25mm length provides the thread engagement needed where the substrate carries depth behind the panel face. Timber batten hoarding frames, composite panels with a backing layer and exposed installations subject to wind loading all require a screw that passes through the panel and bites firmly into the frame below. The 25mm is the correct specification for these conditions.
The flange head spreads clamping force across a wide bearing footprint, preventing the point loading that narrower head designs apply to the panel skin. On ACM sheet, Foamex and rigid composite boards this prevents dimpling and surface stress at the fixing point. The Pozi PZ2 recess drives positively at installation torque with minimal cam-out, keeping the head surface and powder coat intact after fixing.
A 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 5004 Black Blue
RAL 5004 Black Blue sits at the darkest end of the RAL blue family. In most lighting conditions it reads as a very dark, slightly cool near-black. In strong directional light the blue undertone becomes visible, giving the surface a depth and richness that a flat black like RAL 9005 does not carry. This quality makes it a choice colour for architects and specifiers working with dark facade systems, premium cladding and high-end signage where the intention is a surface that rewards close attention rather than one that simply absorbs light.
The distinction between RAL 5004 and RAL 9005 Jet Black matters for fixing specification. A jet black screw head on a black blue panel surface introduces a warmer, flatter tone that reads as a different material in raking light. Each screw head is powder coated to the exact RAL 5004 Classic standard, ensuring the fixing carries the same cool, blue-influenced depth as the panel it sits on. On large dark facade panels and continuous cladding runs where fixings appear at regular intervals, that tonal match is what maintains the integrity of the surface.
RAL 5004 also appears on industrial structures and equipment housings where a very dark blue-black has been used as part of a colour scheme, and on architectural metalwork where the near-black quality of the tone sits alongside other dark materials as a deliberate palette choice.
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 5004 Black Blue are used across:
- Architectural facade cladding and feature panels specified in RAL 5004 Black Blue
- Premium signage trays and architectural lettering supports in near-black blue colour schemes
- ACM and Dibond™ panel installations on deeper substructures requiring extended thread engagement
- High-end retail and commercial fascia systems where a dark, sophisticated blue-black has been specified
- Industrial equipment housings and architectural metalwork finished in RAL 5004
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 5004 Black Blue |
| Standard | BS 4174:1972 |
| Substrates | Steel, Thin Sheet Metal, Timber |
Frequently Asked Questions
Can I use RAL 9005 Jet Black screws instead of RAL 5004 on a black blue panel?
It depends on the application. In diffuse or low light, RAL 5004 and RAL 9005 read as very similar dark tones and the difference may not be apparent. In stronger or raking light, the cool blue undertone of RAL 5004 becomes visible and a jet black fixing will read as a slightly warmer, flatter tone by comparison. On prestige installations, architectural facades and any surface where finish quality is held to a high standard, specifying RAL 5004 to match the panel is the correct approach. For utility applications where the distinction is unlikely to matter in practice, RAL 9005 may be an acceptable alternative.
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 5004 Black Blue 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 was built to solve one problem: giving 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+ | ||
