Description
Agate grey is a light, clean grey with a subtle warmth that places it in the architectural neutral family on steel. These 13mm x 4.2mm hex head self-drilling tek bolts in RAL 7038 Agate Grey are powder coated to match the pale, refined grey used across contemporary cladding rail systems, commercial structural steelwork and architectural metalwork where a light, sophisticated neutral has been specified on visible fixing points. A standard zinc or bright fixing on an agate grey steel structure reads as a cold, metallic mark against a tone chosen for its quiet refinement.
The self-drilling Tek point cuts directly into light-gauge steel up to 3.0mm thick without pre-drilling. The hex head washer face spreads clamping load across the steel substrate, and the 1/4" hex drive is compatible with standard impact drivers and hex socket nut runners.
These bolts are designed for steel-to-steel fixing applications only. For timber, plastic or composite panel substrates, the flange head self-tapping range is the correct specification.
RAL 7038 Agate Grey
RAL 7038 Agate Grey is a light, balanced grey with a slight warm undertone that keeps it from reading as cold or clinical on steel. It sits lighter than RAL 7035 Light Grey and considerably lighter than the dark greys, occupying the upper end of the mid-grey range where greys begin to feel open and airy on structural metalwork. On steel this colour appears on contemporary commercial and architectural cladding rail systems, high-specification structural frameworks and architectural steelwork where a light, composed grey is the brief. The slight warmth in agate grey is what separates it from a purely neutral light grey and makes fixing colour specification matter.
Each bolt head is powder coated to the exact RAL 7038 Classic standard. All RAL colours in the RALfixings range are held in stock for immediate dispatch without special order lead times.
Suitable Applications
13mm RAL 7038 Agate Grey hex head self-drilling tek bolts are used across:
- Contemporary architectural cladding rail systems and commercial steel framing in RAL 7038
- High-specification structural steelwork and architectural metalwork in agate grey
- Metal roofing sheets, flashings and roof structure connections in agate grey colour schemes
- HVAC ductwork, sheet metal fabrication and metal panel installations in RAL 7038
- Equipment housings and service steelwork specified in light architectural grey
Pack Sizes Available
Supplied in trade-ready packs of:
- 100
- 200
- 500
- 1000
- 2000
- 5000
Specification
| Length | 13mm |
| Thread Diameter | 4.2mm |
| Thread Size | 8 x 1/2" |
| Head Type | Hex Head Washer Faced |
| Drive | 1/4" Hex (6.35mm) |
| Point Type | Self-Drilling (Tek) |
| Material | Carbon Steel (Bright Zinc Plated) |
| Head Finish | Powder Coated RAL 7038 Agate Grey |
| Max Substrate Thickness | 3.0mm (light section steel) |
| Substrates | Steel, Sheet Metal |
Frequently Asked Questions
How does RAL 7038 Agate Grey differ from RAL 7035 Light Grey on steel structures?
RAL 7035 Light Grey is a cooler, more neutral light grey used as the standard light grey across industrial and commercial steel applications. RAL 7038 Agate Grey carries a slight warmth and a more refined, architectural character than the functional neutrality of 7035. If your steel structure reads as a light grey with a subtle warm quality rather than a cool or clinical tone, RAL 7038 is the correct specification.
Do these bolts require pre-drilling?
No. The self-drilling Tek point cuts its own hole and forms the thread as it is driven into the substrate, removing the need to pre-drill. These bolts are rated for light section steel up to 3.0mm thick. For substrates thicker than 3.0mm, a different fixing specification is required.
Can these be used on timber or plastic substrates?
No. These hex head self-drilling tek bolts are designed for steel-to-steel applications only. For timber, plastic or composite panel substrates, the RALfixings flange head self-tapping range is the correct product.
How quickly can you deliver?
RAL 7038 Agate Grey 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 the compromise of bright zinc heads on exposed metalwork. Every fixing in the range is powder coated in-house to exact RAL Classic colour standards, with consistent batch-to-batch colour accuracy across every pack size.
The electrostatic powder coating process deposits a fine layer of thermoset pigment onto the bolt head, which is then cured under heat to form a hard, permanently bonded shell. This finish outperforms wet paint across every measurable category: adhesion, hardness, chip resistance, UV stability and colour consistency across production runs.
Benefits of powder coated hex head tek bolts:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other Colour Options
These 13mm x 4.2mm hex head self-drilling tek bolts are available in over 60 colour-matched RAL finishes for cladding, roofing and exposed steel metalwork.
Description
Agate grey is a light, clean grey with a subtle warmth that places it in the architectural neutral family on steel. These 13mm x 4.2mm hex head self-drilling tek bolts in RAL 7038 Agate Grey are powder coated to match the pale, refined grey used across contemporary cladding rail systems, commercial structural steelwork and architectural metalwork where a light, sophisticated neutral has been specified on visible fixing points. A standard zinc or bright fixing on an agate grey steel structure reads as a cold, metallic mark against a tone chosen for its quiet refinement.
The self-drilling Tek point cuts directly into light-gauge steel up to 3.0mm thick without pre-drilling. The hex head washer face spreads clamping load across the steel substrate, and the 1/4" hex drive is compatible with standard impact drivers and hex socket nut runners.
These bolts are designed for steel-to-steel fixing applications only. For timber, plastic or composite panel substrates, the flange head self-tapping range is the correct specification.
RAL 7038 Agate Grey
RAL 7038 Agate Grey is a light, balanced grey with a slight warm undertone that keeps it from reading as cold or clinical on steel. It sits lighter than RAL 7035 Light Grey and considerably lighter than the dark greys, occupying the upper end of the mid-grey range where greys begin to feel open and airy on structural metalwork. On steel this colour appears on contemporary commercial and architectural cladding rail systems, high-specification structural frameworks and architectural steelwork where a light, composed grey is the brief. The slight warmth in agate grey is what separates it from a purely neutral light grey and makes fixing colour specification matter.
Each bolt head is powder coated to the exact RAL 7038 Classic standard. All RAL colours in the RALfixings range are held in stock for immediate dispatch without special order lead times.
Suitable Applications
13mm RAL 7038 Agate Grey hex head self-drilling tek bolts are used across:
- Contemporary architectural cladding rail systems and commercial steel framing in RAL 7038
- High-specification structural steelwork and architectural metalwork in agate grey
- Metal roofing sheets, flashings and roof structure connections in agate grey colour schemes
- HVAC ductwork, sheet metal fabrication and metal panel installations in RAL 7038
- Equipment housings and service steelwork specified in light architectural grey
Pack Sizes Available
Supplied in trade-ready packs of:
- 100
- 200
- 500
- 1000
- 2000
- 5000
Specification
| Length | 13mm |
| Thread Diameter | 4.2mm |
| Thread Size | 8 x 1/2" |
| Head Type | Hex Head Washer Faced |
| Drive | 1/4" Hex (6.35mm) |
| Point Type | Self-Drilling (Tek) |
| Material | Carbon Steel (Bright Zinc Plated) |
| Head Finish | Powder Coated RAL 7038 Agate Grey |
| Max Substrate Thickness | 3.0mm (light section steel) |
| Substrates | Steel, Sheet Metal |
Frequently Asked Questions
How does RAL 7038 Agate Grey differ from RAL 7035 Light Grey on steel structures?
RAL 7035 Light Grey is a cooler, more neutral light grey used as the standard light grey across industrial and commercial steel applications. RAL 7038 Agate Grey carries a slight warmth and a more refined, architectural character than the functional neutrality of 7035. If your steel structure reads as a light grey with a subtle warm quality rather than a cool or clinical tone, RAL 7038 is the correct specification.
Do these bolts require pre-drilling?
No. The self-drilling Tek point cuts its own hole and forms the thread as it is driven into the substrate, removing the need to pre-drill. These bolts are rated for light section steel up to 3.0mm thick. For substrates thicker than 3.0mm, a different fixing specification is required.
Can these be used on timber or plastic substrates?
No. These hex head self-drilling tek bolts are designed for steel-to-steel applications only. For timber, plastic or composite panel substrates, the RALfixings flange head self-tapping range is the correct product.
How quickly can you deliver?
RAL 7038 Agate Grey 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 the compromise of bright zinc heads on exposed metalwork. Every fixing in the range is powder coated in-house to exact RAL Classic colour standards, with consistent batch-to-batch colour accuracy across every pack size.
The electrostatic powder coating process deposits a fine layer of thermoset pigment onto the bolt head, which is then cured under heat to form a hard, permanently bonded shell. This finish outperforms wet paint across every measurable category: adhesion, hardness, chip resistance, UV stability and colour consistency across production runs.
Benefits of powder coated hex head tek bolts:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other Colour Options
These 13mm x 4.2mm hex head self-drilling tek bolts are available in over 60 colour-matched RAL finishes for cladding, roofing and exposed steel 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
Agate grey is a light, clean grey with a subtle warmth that places it in the architectural neutral family on steel. These 13mm x 4.2mm hex head self-drilling tek bolts in RAL 7038 Agate Grey are powder coated to match the pale, refined grey used across contemporary cladding rail systems, commercial structural steelwork and architectural metalwork where a light, sophisticated neutral has been specified on visible fixing points. A standard zinc or bright fixing on an agate grey steel structure reads as a cold, metallic mark against a tone chosen for its quiet refinement.
The self-drilling Tek point cuts directly into light-gauge steel up to 3.0mm thick without pre-drilling. The hex head washer face spreads clamping load across the steel substrate, and the 1/4" hex drive is compatible with standard impact drivers and hex socket nut runners.
These bolts are designed for steel-to-steel fixing applications only. For timber, plastic or composite panel substrates, the flange head self-tapping range is the correct specification.
RAL 7038 Agate Grey
RAL 7038 Agate Grey is a light, balanced grey with a slight warm undertone that keeps it from reading as cold or clinical on steel. It sits lighter than RAL 7035 Light Grey and considerably lighter than the dark greys, occupying the upper end of the mid-grey range where greys begin to feel open and airy on structural metalwork. On steel this colour appears on contemporary commercial and architectural cladding rail systems, high-specification structural frameworks and architectural steelwork where a light, composed grey is the brief. The slight warmth in agate grey is what separates it from a purely neutral light grey and makes fixing colour specification matter.
Each bolt head is powder coated to the exact RAL 7038 Classic standard. All RAL colours in the RALfixings range are held in stock for immediate dispatch without special order lead times.
Suitable Applications
13mm RAL 7038 Agate Grey hex head self-drilling tek bolts are used across:
- Contemporary architectural cladding rail systems and commercial steel framing in RAL 7038
- High-specification structural steelwork and architectural metalwork in agate grey
- Metal roofing sheets, flashings and roof structure connections in agate grey colour schemes
- HVAC ductwork, sheet metal fabrication and metal panel installations in RAL 7038
- Equipment housings and service steelwork specified in light architectural grey
Pack Sizes Available
Supplied in trade-ready packs of:
- 100
- 200
- 500
- 1000
- 2000
- 5000
Specification
| Length | 13mm |
| Thread Diameter | 4.2mm |
| Thread Size | 8 x 1/2" |
| Head Type | Hex Head Washer Faced |
| Drive | 1/4" Hex (6.35mm) |
| Point Type | Self-Drilling (Tek) |
| Material | Carbon Steel (Bright Zinc Plated) |
| Head Finish | Powder Coated RAL 7038 Agate Grey |
| Max Substrate Thickness | 3.0mm (light section steel) |
| Substrates | Steel, Sheet Metal |
Frequently Asked Questions
How does RAL 7038 Agate Grey differ from RAL 7035 Light Grey on steel structures?
RAL 7035 Light Grey is a cooler, more neutral light grey used as the standard light grey across industrial and commercial steel applications. RAL 7038 Agate Grey carries a slight warmth and a more refined, architectural character than the functional neutrality of 7035. If your steel structure reads as a light grey with a subtle warm quality rather than a cool or clinical tone, RAL 7038 is the correct specification.
Do these bolts require pre-drilling?
No. The self-drilling Tek point cuts its own hole and forms the thread as it is driven into the substrate, removing the need to pre-drill. These bolts are rated for light section steel up to 3.0mm thick. For substrates thicker than 3.0mm, a different fixing specification is required.
Can these be used on timber or plastic substrates?
No. These hex head self-drilling tek bolts are designed for steel-to-steel applications only. For timber, plastic or composite panel substrates, the RALfixings flange head self-tapping range is the correct product.
How quickly can you deliver?
RAL 7038 Agate Grey 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 the compromise of bright zinc heads on exposed metalwork. Every fixing in the range is powder coated in-house to exact RAL Classic colour standards, with consistent batch-to-batch colour accuracy across every pack size.
The electrostatic powder coating process deposits a fine layer of thermoset pigment onto the bolt head, which is then cured under heat to form a hard, permanently bonded shell. This finish outperforms wet paint across every measurable category: adhesion, hardness, chip resistance, UV stability and colour consistency across production runs.
Benefits of powder coated hex head tek bolts:
- Scratch resistant
- Rust resistant
- UV resistant
- Weather resistant
- Colourfast
Other Colour Options
These 13mm x 4.2mm hex head self-drilling tek bolts are available in over 60 colour-matched RAL finishes for cladding, roofing and exposed steel metalwork.
Recommended applications
Designed for fixing cladding rails, purlins, and light steel framing to structural steel substrates. The powder-coated hex head matches your panel or cladding RAL precisely, eliminating visible bright metal fixings on exposed metalwork. The self-drilling point removes the need for pre-drilling in light gauge steel.
At 13mm, these bolts are ideal for thin sheet metal connections and light-gauge steel framing where a short fixing length is required. The 1/4" hex drive (6.35mm) is compatible with standard impact drivers and hex socket nut runners.
Not recommended for timber or plastic substrates — use our flange head self tapping range for non-steel applications.
Suitable for
In Stock
*Min Order Quantity: 100
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| 200+ | ||
| 500+ | ||
| 1000+ | ||
| 2000+ | ||
| 5000+ | ||