Screws for Heavy Steel With a 19mm Bonded Washer (Pack of 100)
For fixing metal roofing sheets to heavy steel, Cladco TEK screws feature a self‑drilling design and are supplied in packs of 100, each with a bonded sealing washer. They’re suitable for heavier steel applications where a dependable fixing is essential.
About Our TEK Screws for Heavy Steel
Working with heavy-section steel purlins requires a fixing that can drill cleanly into the material while maintaining protection at the fixing point. Cladco self‑drilling TEK screws are intended for attaching roofing sheets to heavy steel, helping support consistent installation across more demanding roof structures.
Each screw features a 5/16″ hexagonal head and is supplied with a 19mm bonded sealing washer, made up of a stainless‑steel washer with a bonded neoprene pad. This combination helps maintain protection between the sheet and the fixing, supporting long‑term performance in exposed conditions.
Benefits of Cladco TEK Screws for Heavy Steel
- Suitable for fixing roofing sheets to heavy-section steel purlins
- Self‑drilling design for use with heavier steel
- 19mm bonded sealing washer supports protection at the fixing point
- 5/16″ hex head for controlled installation
- Available in multiple lengths to suit different build‑ups
Available in a wide range of lengths from 38mm to 185mm, these TEK screws allow you to select the most suitable option depending on the thickness of the sheet and steel being fixed into. Selecting the correct fixing for the application is important, so if you’re unsure which TEK screw is right for your project, our team can help point you in the right direction.
Generally, 38mm screws are recommended for box profile sheets, 55mm screws for tile form installations, and 75mm screws for corrugated sheets. When using 75mm screws, the standard washers will need to be replaced with spat washers.
For further guidance, please refer to our Help & Advice section, including FAQs and installation guides, or contact us directly by phone or email.
Specifications
- Lengths available: 38mm to 150mm
- Head: 5/16″ hex
- Washer: 19mm bonded sealing washer
- Pack size: 100
- Use: Fixing sheets to heavy steel
Looking for an alternative?
For screws you can fix to light steel, see our screws for light steel with a 19mm bonded washer.
Or browse our tools and accessories for fixings and more.
From £31.56 inc VAT
Order A Sample Pack!
Download the datasheet for Screws for Heavy Steel With a 19mm Bonded Washer (Pack of 100)
| Type | When? | Cost? | ||
|---|---|---|---|---|
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National Delivery | Orders under £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£192.00 |
| Orders over £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£96.00 | ||
| Orders over £1,500 | Est. 5 working days* Roofing items 7-10 working days* |
FREE | ||
| Scotland Delivery | Postcodes: PA, PH, DD, AB, IV, & KW | Est. 15 working days* Roofing items 7-10 working days* |
£360.00 | |
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Millboard Delivery | Orders under £2,000 | Est. 5 working days* | £192.00 |
| Orders over £2,000 | Est. 5 working days* | FREE | ||
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Parcelforce Standard | (Small Parcels) | 3-5 working days* | £10.30 |
| (Large Parcels) | 3-5 working days* | £31.80 | ||
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Sample Packs via Courier | 5 working days* | FREE | |
*Please allow for public holidays and weekends (non-delivery days)
Some of our products are available for collection from our warehouses in Okehampton (Devon) and Andover (Hampshire) - This option will show at checkout, when available.
Standard collection lead time is 3-5 working days, this may vary depending on the product. If you would like to collect your order after 2 hours, please choose this option at checkout.
Please note that collections are only available from Monday-Friday, 08:00 - 17:00 & Saturday, 08:00 - 12:30 (Note: this IS the cut off time for collections, despite our closing time of 13:00)
Please Note The Following Prior To Collection:
Vehicles we can and cannot load
Cladco Profiles® will only load flatbed lorries and flatbed trailers for insurance purposes. If the appropriate vehicle is not available, two people would be required for a collection.
Cladco Profiles® will NOT load any vehicles with roof racks, horse boxes, cattle lorries or fixed-sided trailers. Cladco Profiles® has the right to refuse loading a vehicle for any reason.
Before arranging a collection, please read our Customer Collection Notice below.
Our Okehampton HQ and Warehouses (Devon)
Our Andover Warehouses (Hampshire)
Customer Collection Notice
Please ensure you have pre-booked your collection slot before travelling to site.
When arriving to collect your order, please report to a member of our Warehouse Team who will register your arrival and locate your goods. Once ready, your items will be picked and brought to your vehicle loading area.
During busy periods, there may be a short wait while our yard team assist other customers or complete other loading tasks. We always do our best to work within your booked collection time.
We respectfully draw your attention to the following important points:
- Loading is ultimately the customer’s responsibility. While our team can assist with mechanical loading using forklifts, we cannot handball items into enclosed vehicles. Customers must ensure their vehicle is suitable and that goods are safely loaded and adequately secured before leaving the premises.
- Sharp sheeting, metal goods, and long/heavy items may pose additional handling risks. Please come prepared with high-quality protective gloves, and any appropriate protection materials to avoid damage to your vehicle or restraints (e.g. ropes or straps). The edges of roofing sheets and metal products can be extremely sharp, and care should be taken when handling.
- We strongly recommend that customers bring their own straps, ropes, or other securing materials, as we are unable to provide these at the point of collection.
- If you are unsure of your vehicle’s load capacity, we can advise the approximate weight of your order in advance. It is your responsibility to ensure your vehicle is suitable for transporting the goods safely and legally.
- Cladco will not be held liable for any damage to your vehicle or goods once they have been loaded and leave our premises. Loading assistance is provided entirely at the customer’s own risk.
Click & Collect – Pre-Booking Required
You are welcome to collect your order from either our Okehampton (Devon) or Andover (Hampshire) site. All collections must be pre-booked in advance so your items can be picked, packed and ready for you.
Please do not travel to site without a confirmed collection time, as we cannot guarantee your order will be available.
Once your items are ready, you will receive an email with a link to book your collection slot. Please note, same-day collections are not available and bookings must be made at least two hours in advance.
When you arrive, please bring your order confirmation and follow the signage to the collection area where a member of our team will assist you.
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