Coloured 32mm x 4.2mm Flange Head Self-Tapping Screws
These 32mm coloured flange head self-tapping screws are the longest in the flange head range, built for fixing panels, trims, and sheet materials where maximum thread engagement is required. Thicker substrates, deeper timber battens, double-skin panel assemblies, and wind-loaded hoarding installations all demand a screw that reaches well beyond the panel face and bites firmly into the frame behind - the 32mm delivers the pull-out resistance these applications require.
The integrated flange head acts like a built-in washer, distributing clamping force across a wide bearing footprint. On ACM sheet, Foamex, and rigid composite boards, this prevents the dimpling and surface stress that narrower head designs apply at the fixing point. 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.
Manufactured from carbon steel with a bright zinc plated (BZP) base and finished in a durable RAL powder coat, each screw head is colour-matched to the panel it sits against. On large facade panels and continuous cladding runs where fixings are visible at regular intervals, a row of uncoated zinc heads breaks the finish the panel colour was chosen to achieve. A colour-matched flange head sits within the surface rather than against it, holding the detail together across the full installation.
41 RAL Colour-Matched Finishes
Every 4.2 x 32mm flange head screw is electrostatically powder-coated and oven-cured to a RAL Classic colour standard. The result is a hard, uniform finish bonded directly to the screw head and flange - resistant to scratching, chipping, UV fading, and general site wear. Unlike wet paint, powder coat will not peel, blister, or thin at edges over time, even on exposed external installations subject to weather, handling, and repeated panel changes.
With 41 stocked RAL colours spanning whites, greys, blacks, blues, greens, reds, yellows, browns, and purples, these coloured flange head screws cover the most commonly specified colours across cladding, hoarding, signage, and facade applications. Whether you are matching RAL 8019 Grey Brown timber-effect cladding, RAL 7016 Anthracite Grey facade panels, RAL 9005 Jet Black hoarding systems, or RAL 9010 Pure White commercial fascias, the right colour is available for immediate dispatch.
Need a RAL colour outside the stocked range? We hold over 400 RAL Classic powders and can coat to any colour on request. Contact us with your RAL reference for availability and lead times.
Common Applications
4.2 x 32mm coloured flange head self-tapping screws are used wherever a colour-matched clamping fix with maximum thread engagement is required:
- Wind-loaded hoarding installations - exposed perimeter hoardings on deep timber or steel frames
- Architectural facade cladding - timber-effect panels, ACM, and Dibond® on deeper substructures
- Double-skin and multi-layer assemblies - panels with backing layers, packers, or insulation
- Signage and fascia systems - deeper sign trays, large-format fascia frames, and heavy trims
- Agricultural and industrial buildings - rural cladding, equipment housings, and site enclosures
- Temporary installations - event hoardings, exhibition panels, and commercial site signage
Specification
| Size | 4.2 x 32mm |
| Thread Diameter | 4.2mm |
| Length | 32mm |
| Gauge | 8 |
| Head Type | Flange head (integrated washer) |
| Recess Type | Pozidriv (PZ2) |
| Thread Type | 60° self-tapping |
| Point Type | AB point |
| Material | Carbon steel |
| Base Finish | Bright Zinc Plated (BZP) |
| Coating | RAL Classic powder coat (electrostatic, oven-cured) |
| Standard | BS 4174:1972 |
| Substrates | Steel, thin sheet metal, timber |
| Colours Available | 41 stocked RAL colours (any RAL Classic on request) |
Frequently Asked Questions
When should I use 32mm flange head screws instead of 25mm or 19mm?
The 32mm is the longest screw in the flange head range and provides the deepest thread engagement. Use it where the substrate is thicker, where panels are fixed to deeper timber battens, where double-skin assemblies increase the distance between the panel face and the fixing frame, or where wind-loaded hoarding installations demand maximum pull-out resistance. The 25mm suits moderate-depth substrates and standard timber frames; the 19mm suits single-skin sheet metal connections.
Can these screws fix into timber as well as metal?
Yes. 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. The 32mm length provides deep engagement into timber stud frames, making these screws well suited to hoarding installations on substantial timber substructures.
What is a flange head screw?
A flange head screw has an integrated washer built into the underside of the head. This wider bearing surface spreads the clamping load across a larger area than a standard pan or countersunk head, reducing the risk of pull-through on thin panels and minimising surface deformation. On ACM, Foamex, and rigid composite boards, this prevents the dimpling that narrower head designs can cause at the fixing point.
What driver bit do I need for these screws?
These flange head screws have a Pozidriv PZ2 recess. Use a standard PZ2 driver bit at controlled speed - the Pozi recess drives positively with minimal cam-out, keeping the head surface and powder coat intact during installation.
What RAL colours are available for these flange head screws?
These 4.2 x 32mm flange head self-tapping screws are stocked in 41 RAL Classic colours covering whites, greys, blacks, blues, greens, reds, yellows, browns, and purples. If you need a colour outside this range, contact us - we hold over 400 RAL Classic powders and can coat to any colour on request.
Powder Coated Self-Tapping Screws
RALfixings specialise in colour-matched visible fixings for the cladding, hoarding, signage, and construction sectors. Every self-tapping screw is powder-coated in-house using an electrostatic spray process, then oven-cured at 200°C to produce a hard, even finish that bonds directly to the screw head and flange.
Powder coating outperforms wet paint in every measurable way. The electrostatically charged powder particles wrap around the flange edge and into the Pozidriv recess, building a consistent film thickness that liquid paint cannot replicate. On large facade panels and continuous cladding runs where fixings are visible at regular intervals, batch-to-batch colour consistency across every pack is what holds the finish together. The cured finish is harder, more flexible, and far more resistant to impact, abrasion, and chemical exposure than paint, lasting years beyond a conventional painted finish in fully exposed exterior conditions.
Benefits of powder coated self-tapping screws:
- Scratch resistant - hard cured finish withstands handling, installation, and panel changes
- Rust resistant - BZP base plus powder coat provides dual corrosion protection
- UV resistant - colour stays true with no fading or chalking
- Weather resistant - will not peel, blister, or crack in exterior conditions
- Colourfast - consistent colour across production runs and pack sizes
Available RAL Colours
4.2 x 32mm coloured flange head self-tapping screws are stocked in the following 41 RAL Classic colours. Select your colour from the dropdown above, or view the full RALfixings colour guide for additional RAL colours available on request.
- RAL 1013 Oyster White
- RAL 1015 Light Ivory
- RAL 1016 Sulphur Yellow
- RAL 1019 Grey Beige
- RAL 1020 Olive Yellow
- RAL 1023 Traffic Yellow
- RAL 1033 Dahlia Yellow
- RAL 1036 Pearl Gold
- RAL 3002 Carmine Red
- RAL 3004 Purple Red
- RAL 3009 Oxide Red
- RAL 3020 Traffic Red
- RAL 4006 Traffic Purple
- RAL 4007 Violet Purple
- RAL 4010 Telemagenta
- RAL 5003 Sapphire Blue
- RAL 5004 Black Blue
- RAL 5012 Light Blue
- RAL 5013 Cobalt Blue
- RAL 5023 Distant Blue
- RAL 5024 Pastel Blue
- RAL 6003 Olive Green
- RAL 6005 Moss Green
- RAL 6009 Fir Green
- RAL 6012 Black Green
- RAL 6016 Turquoise Green
- RAL 6024 Traffic Green
- RAL 6025 Fern Green
- RAL 6027 Light Green
- RAL 7009 Green Grey
- RAL 7016 Anthracite Grey
- RAL 7032 Pebble Grey
- RAL 7035 Light Grey
- RAL 7038 Agate Grey
- RAL 7042 Traffic Grey A
- RAL 8004 Copper Brown
- RAL 8008 Olive Brown
- RAL 8019 Grey Brown
- RAL 9005 Jet Black
- RAL 9010 Pure White
- RAL 9016 Traffic White
Related Products
Coloured 32mm x 4.2mm Flange Head Self-Tapping Screws
These 32mm coloured flange head self-tapping screws are the longest in the flange head range, built for fixing panels, trims, and sheet materials where maximum thread engagement is required. Thicker substrates, deeper timber battens, double-skin panel assemblies, and wind-loaded hoarding installations all demand a screw that reaches well beyond the panel face and bites firmly into the frame behind - the 32mm delivers the pull-out resistance these applications require.
The integrated flange head acts like a built-in washer, distributing clamping force across a wide bearing footprint. On ACM sheet, Foamex, and rigid composite boards, this prevents the dimpling and surface stress that narrower head designs apply at the fixing point. 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.
Manufactured from carbon steel with a bright zinc plated (BZP) base and finished in a durable RAL powder coat, each screw head is colour-matched to the panel it sits against. On large facade panels and continuous cladding runs where fixings are visible at regular intervals, a row of uncoated zinc heads breaks the finish the panel colour was chosen to achieve. A colour-matched flange head sits within the surface rather than against it, holding the detail together across the full installation.
41 RAL Colour-Matched Finishes
Every 4.2 x 32mm flange head screw is electrostatically powder-coated and oven-cured to a RAL Classic colour standard. The result is a hard, uniform finish bonded directly to the screw head and flange - resistant to scratching, chipping, UV fading, and general site wear. Unlike wet paint, powder coat will not peel, blister, or thin at edges over time, even on exposed external installations subject to weather, handling, and repeated panel changes.
With 41 stocked RAL colours spanning whites, greys, blacks, blues, greens, reds, yellows, browns, and purples, these coloured flange head screws cover the most commonly specified colours across cladding, hoarding, signage, and facade applications. Whether you are matching RAL 8019 Grey Brown timber-effect cladding, RAL 7016 Anthracite Grey facade panels, RAL 9005 Jet Black hoarding systems, or RAL 9010 Pure White commercial fascias, the right colour is available for immediate dispatch.
Need a RAL colour outside the stocked range? We hold over 400 RAL Classic powders and can coat to any colour on request. Contact us with your RAL reference for availability and lead times.
Common Applications
4.2 x 32mm coloured flange head self-tapping screws are used wherever a colour-matched clamping fix with maximum thread engagement is required:
- Wind-loaded hoarding installations - exposed perimeter hoardings on deep timber or steel frames
- Architectural facade cladding - timber-effect panels, ACM, and Dibond® on deeper substructures
- Double-skin and multi-layer assemblies - panels with backing layers, packers, or insulation
- Signage and fascia systems - deeper sign trays, large-format fascia frames, and heavy trims
- Agricultural and industrial buildings - rural cladding, equipment housings, and site enclosures
- Temporary installations - event hoardings, exhibition panels, and commercial site signage
Specification
| Size | 4.2 x 32mm |
| Thread Diameter | 4.2mm |
| Length | 32mm |
| Gauge | 8 |
| Head Type | Flange head (integrated washer) |
| Recess Type | Pozidriv (PZ2) |
| Thread Type | 60° self-tapping |
| Point Type | AB point |
| Material | Carbon steel |
| Base Finish | Bright Zinc Plated (BZP) |
| Coating | RAL Classic powder coat (electrostatic, oven-cured) |
| Standard | BS 4174:1972 |
| Substrates | Steel, thin sheet metal, timber |
| Colours Available | 41 stocked RAL colours (any RAL Classic on request) |
Frequently Asked Questions
When should I use 32mm flange head screws instead of 25mm or 19mm?
The 32mm is the longest screw in the flange head range and provides the deepest thread engagement. Use it where the substrate is thicker, where panels are fixed to deeper timber battens, where double-skin assemblies increase the distance between the panel face and the fixing frame, or where wind-loaded hoarding installations demand maximum pull-out resistance. The 25mm suits moderate-depth substrates and standard timber frames; the 19mm suits single-skin sheet metal connections.
Can these screws fix into timber as well as metal?
Yes. 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. The 32mm length provides deep engagement into timber stud frames, making these screws well suited to hoarding installations on substantial timber substructures.
What is a flange head screw?
A flange head screw has an integrated washer built into the underside of the head. This wider bearing surface spreads the clamping load across a larger area than a standard pan or countersunk head, reducing the risk of pull-through on thin panels and minimising surface deformation. On ACM, Foamex, and rigid composite boards, this prevents the dimpling that narrower head designs can cause at the fixing point.
What driver bit do I need for these screws?
These flange head screws have a Pozidriv PZ2 recess. Use a standard PZ2 driver bit at controlled speed - the Pozi recess drives positively with minimal cam-out, keeping the head surface and powder coat intact during installation.
What RAL colours are available for these flange head screws?
These 4.2 x 32mm flange head self-tapping screws are stocked in 41 RAL Classic colours covering whites, greys, blacks, blues, greens, reds, yellows, browns, and purples. If you need a colour outside this range, contact us - we hold over 400 RAL Classic powders and can coat to any colour on request.
Powder Coated Self-Tapping Screws
RALfixings specialise in colour-matched visible fixings for the cladding, hoarding, signage, and construction sectors. Every self-tapping screw is powder-coated in-house using an electrostatic spray process, then oven-cured at 200°C to produce a hard, even finish that bonds directly to the screw head and flange.
Powder coating outperforms wet paint in every measurable way. The electrostatically charged powder particles wrap around the flange edge and into the Pozidriv recess, building a consistent film thickness that liquid paint cannot replicate. On large facade panels and continuous cladding runs where fixings are visible at regular intervals, batch-to-batch colour consistency across every pack is what holds the finish together. The cured finish is harder, more flexible, and far more resistant to impact, abrasion, and chemical exposure than paint, lasting years beyond a conventional painted finish in fully exposed exterior conditions.
Benefits of powder coated self-tapping screws:
- Scratch resistant - hard cured finish withstands handling, installation, and panel changes
- Rust resistant - BZP base plus powder coat provides dual corrosion protection
- UV resistant - colour stays true with no fading or chalking
- Weather resistant - will not peel, blister, or crack in exterior conditions
- Colourfast - consistent colour across production runs and pack sizes
Available RAL Colours
4.2 x 32mm coloured flange head self-tapping screws are stocked in the following 41 RAL Classic colours. Select your colour from the dropdown above, or view the full RALfixings colour guide for additional RAL colours available on request.
- RAL 1013 Oyster White
- RAL 1015 Light Ivory
- RAL 1016 Sulphur Yellow
- RAL 1019 Grey Beige
- RAL 1020 Olive Yellow
- RAL 1023 Traffic Yellow
- RAL 1033 Dahlia Yellow
- RAL 1036 Pearl Gold
- RAL 3002 Carmine Red
- RAL 3004 Purple Red
- RAL 3009 Oxide Red
- RAL 3020 Traffic Red
- RAL 4006 Traffic Purple
- RAL 4007 Violet Purple
- RAL 4010 Telemagenta
- RAL 5003 Sapphire Blue
- RAL 5004 Black Blue
- RAL 5012 Light Blue
- RAL 5013 Cobalt Blue
- RAL 5023 Distant Blue
- RAL 5024 Pastel Blue
- RAL 6003 Olive Green
- RAL 6005 Moss Green
- RAL 6009 Fir Green
- RAL 6012 Black Green
- RAL 6016 Turquoise Green
- RAL 6024 Traffic Green
- RAL 6025 Fern Green
- RAL 6027 Light Green
- RAL 7009 Green Grey
- RAL 7016 Anthracite Grey
- RAL 7032 Pebble Grey
- RAL 7035 Light Grey
- RAL 7038 Agate Grey
- RAL 7042 Traffic Grey A
- RAL 8004 Copper Brown
- RAL 8008 Olive Brown
- RAL 8019 Grey Brown
- RAL 9005 Jet Black
- RAL 9010 Pure White
- RAL 9016 Traffic White
Related Products
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.
What our customers say
Posted by Anton on 15th Mar 2026
Absolutely bang on colour match to the panels I was fitting. Received next day as promised by Jon. Great service
Posted by Mark Wilby on 27th Sep 2025
Great product, paint ral colour stop on ??. Delivery as quoted
Posted by Unknown on 30th Aug 2025
Top quality fast delivery
Posted by Paul Nesbit on 10th Aug 2025
Good quality, quick delivery
Posted by Fernando on 22nd Jun 2025
Great quality and very handy to find such durable painted screws! Will be ordering again
Posted by B C on 26th Nov 2024
Quality colour screws! We ordered a few sizes for our project. Will buy again!
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Coloured 32mm x 4.2mm Flange Head Self-Tapping Screws
These 32mm coloured flange head self-tapping screws are the longest in the flange head range, built for fixing panels, trims, and sheet materials where maximum thread engagement is required. Thicker substrates, deeper timber battens, double-skin panel assemblies, and wind-loaded hoarding installations all demand a screw that reaches well beyond the panel face and bites firmly into the frame behind - the 32mm delivers the pull-out resistance these applications require.
The integrated flange head acts like a built-in washer, distributing clamping force across a wide bearing footprint. On ACM sheet, Foamex, and rigid composite boards, this prevents the dimpling and surface stress that narrower head designs apply at the fixing point. 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.
Manufactured from carbon steel with a bright zinc plated (BZP) base and finished in a durable RAL powder coat, each screw head is colour-matched to the panel it sits against. On large facade panels and continuous cladding runs where fixings are visible at regular intervals, a row of uncoated zinc heads breaks the finish the panel colour was chosen to achieve. A colour-matched flange head sits within the surface rather than against it, holding the detail together across the full installation.
41 RAL Colour-Matched Finishes
Every 4.2 x 32mm flange head screw is electrostatically powder-coated and oven-cured to a RAL Classic colour standard. The result is a hard, uniform finish bonded directly to the screw head and flange - resistant to scratching, chipping, UV fading, and general site wear. Unlike wet paint, powder coat will not peel, blister, or thin at edges over time, even on exposed external installations subject to weather, handling, and repeated panel changes.
With 41 stocked RAL colours spanning whites, greys, blacks, blues, greens, reds, yellows, browns, and purples, these coloured flange head screws cover the most commonly specified colours across cladding, hoarding, signage, and facade applications. Whether you are matching RAL 8019 Grey Brown timber-effect cladding, RAL 7016 Anthracite Grey facade panels, RAL 9005 Jet Black hoarding systems, or RAL 9010 Pure White commercial fascias, the right colour is available for immediate dispatch.
Need a RAL colour outside the stocked range? We hold over 400 RAL Classic powders and can coat to any colour on request. Contact us with your RAL reference for availability and lead times.
Common Applications
4.2 x 32mm coloured flange head self-tapping screws are used wherever a colour-matched clamping fix with maximum thread engagement is required:
- Wind-loaded hoarding installations - exposed perimeter hoardings on deep timber or steel frames
- Architectural facade cladding - timber-effect panels, ACM, and Dibond® on deeper substructures
- Double-skin and multi-layer assemblies - panels with backing layers, packers, or insulation
- Signage and fascia systems - deeper sign trays, large-format fascia frames, and heavy trims
- Agricultural and industrial buildings - rural cladding, equipment housings, and site enclosures
- Temporary installations - event hoardings, exhibition panels, and commercial site signage
Specification
| Size | 4.2 x 32mm |
| Thread Diameter | 4.2mm |
| Length | 32mm |
| Gauge | 8 |
| Head Type | Flange head (integrated washer) |
| Recess Type | Pozidriv (PZ2) |
| Thread Type | 60° self-tapping |
| Point Type | AB point |
| Material | Carbon steel |
| Base Finish | Bright Zinc Plated (BZP) |
| Coating | RAL Classic powder coat (electrostatic, oven-cured) |
| Standard | BS 4174:1972 |
| Substrates | Steel, thin sheet metal, timber |
| Colours Available | 41 stocked RAL colours (any RAL Classic on request) |
Frequently Asked Questions
When should I use 32mm flange head screws instead of 25mm or 19mm?
The 32mm is the longest screw in the flange head range and provides the deepest thread engagement. Use it where the substrate is thicker, where panels are fixed to deeper timber battens, where double-skin assemblies increase the distance between the panel face and the fixing frame, or where wind-loaded hoarding installations demand maximum pull-out resistance. The 25mm suits moderate-depth substrates and standard timber frames; the 19mm suits single-skin sheet metal connections.
Can these screws fix into timber as well as metal?
Yes. 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. The 32mm length provides deep engagement into timber stud frames, making these screws well suited to hoarding installations on substantial timber substructures.
What is a flange head screw?
A flange head screw has an integrated washer built into the underside of the head. This wider bearing surface spreads the clamping load across a larger area than a standard pan or countersunk head, reducing the risk of pull-through on thin panels and minimising surface deformation. On ACM, Foamex, and rigid composite boards, this prevents the dimpling that narrower head designs can cause at the fixing point.
What driver bit do I need for these screws?
These flange head screws have a Pozidriv PZ2 recess. Use a standard PZ2 driver bit at controlled speed - the Pozi recess drives positively with minimal cam-out, keeping the head surface and powder coat intact during installation.
What RAL colours are available for these flange head screws?
These 4.2 x 32mm flange head self-tapping screws are stocked in 41 RAL Classic colours covering whites, greys, blacks, blues, greens, reds, yellows, browns, and purples. If you need a colour outside this range, contact us - we hold over 400 RAL Classic powders and can coat to any colour on request.
Powder Coated Self-Tapping Screws
RALfixings specialise in colour-matched visible fixings for the cladding, hoarding, signage, and construction sectors. Every self-tapping screw is powder-coated in-house using an electrostatic spray process, then oven-cured at 200°C to produce a hard, even finish that bonds directly to the screw head and flange.
Powder coating outperforms wet paint in every measurable way. The electrostatically charged powder particles wrap around the flange edge and into the Pozidriv recess, building a consistent film thickness that liquid paint cannot replicate. On large facade panels and continuous cladding runs where fixings are visible at regular intervals, batch-to-batch colour consistency across every pack is what holds the finish together. The cured finish is harder, more flexible, and far more resistant to impact, abrasion, and chemical exposure than paint, lasting years beyond a conventional painted finish in fully exposed exterior conditions.
Benefits of powder coated self-tapping screws:
- Scratch resistant - hard cured finish withstands handling, installation, and panel changes
- Rust resistant - BZP base plus powder coat provides dual corrosion protection
- UV resistant - colour stays true with no fading or chalking
- Weather resistant - will not peel, blister, or crack in exterior conditions
- Colourfast - consistent colour across production runs and pack sizes
Available RAL Colours
4.2 x 32mm coloured flange head self-tapping screws are stocked in the following 41 RAL Classic colours. Select your colour from the dropdown above, or view the full RALfixings colour guide for additional RAL colours available on request.
- RAL 1013 Oyster White
- RAL 1015 Light Ivory
- RAL 1016 Sulphur Yellow
- RAL 1019 Grey Beige
- RAL 1020 Olive Yellow
- RAL 1023 Traffic Yellow
- RAL 1033 Dahlia Yellow
- RAL 1036 Pearl Gold
- RAL 3002 Carmine Red
- RAL 3004 Purple Red
- RAL 3009 Oxide Red
- RAL 3020 Traffic Red
- RAL 4006 Traffic Purple
- RAL 4007 Violet Purple
- RAL 4010 Telemagenta
- RAL 5003 Sapphire Blue
- RAL 5004 Black Blue
- RAL 5012 Light Blue
- RAL 5013 Cobalt Blue
- RAL 5023 Distant Blue
- RAL 5024 Pastel Blue
- RAL 6003 Olive Green
- RAL 6005 Moss Green
- RAL 6009 Fir Green
- RAL 6012 Black Green
- RAL 6016 Turquoise Green
- RAL 6024 Traffic Green
- RAL 6025 Fern Green
- RAL 6027 Light Green
- RAL 7009 Green Grey
- RAL 7016 Anthracite Grey
- RAL 7032 Pebble Grey
- RAL 7035 Light Grey
- RAL 7038 Agate Grey
- RAL 7042 Traffic Grey A
- RAL 8004 Copper Brown
- RAL 8008 Olive Brown
- RAL 8019 Grey Brown
- RAL 9005 Jet Black
- RAL 9010 Pure White
- RAL 9016 Traffic White
Related Products
Recommended applications
The longest screw in the flange head range, built for fixing panels, trims, and sheet materials where maximum thread engagement is needed. Thicker substrates, deeper timber battens, double-skin assemblies, and wind-loaded hoarding installations all demand a screw that reaches well beyond the panel face — the 32mm delivers the pull-out resistance these conditions require.
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. The flange head distributes clamping force across a wide bearing footprint, preventing dimpling and pull-through on thin panels. Drive with a PZ2 Pozidriv bit at controlled speed.
For moderate-depth substrates and standard timber frames, the 25mm flange head is usually sufficient. For single-skin sheet metal connections, the 19mm is the most economical choice.
Suitable for
In Stock
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| 200+ | ||
| 500+ | ||
| 1000+ | ||
| 2000+ | ||
| 5000+ | ||
