Self-Drilling Tek Screws Light Section 5.5 x 25mm Hex with 16mm EPDM Washer – Box of 100

5.5 x 25mm hex head self-drilling tek screws light section with a bonded 16mm EPDM washer, in a box of 100. Designed for fixing roofing and cladding sheets to light section steel up to 5mm thick, they drill, tap and fix in one operation with a standard hex driver.

A silver organic exterior coating gives durable corrosion resistance for roofing and cladding work, and the EPDM washer seals each fixing against water ingress.

Key features

• No.3 drill point for steel up to 5mm
• Hex washer head – drive with a hex socket
• Bonded EPDM washer seals against water
• Silver organic exterior coating
• Hardened carbon steel

Specification

Packaging may vary from the image shown. Supplied as specified.

Applications

Agricultural, industrial and domestic roofing and cladding – fixing roofing and cladding sheets to light section steel up to 5mm thick. Also suitable for flashings, gutter brackets and trims.

FAQs

What driver do I need?

A hex socket on a screw gun or impact driver – set the clutch or depth so the washer compresses without being crushed.

Light section or heavy section – which do I need?

Light section (No.3 point) screws are for steel up to 5mm thick; heavy section (No.5 point) for steel up to 12mm. Use slash-point screws for timber purlins.

Do I need the washer version?

Use washered screws wherever the fixing is exposed to the weather, such as through roof sheets, to seal the hole. Non-washered screws suit brackets and internal steelwork.

Are they suitable outdoors?

Yes – the silver organic exterior coating has a corrosion rating of 3, for urban and industrial areas with a low salt atmosphere. For coastal or marine sites use bi-metal stainless screws.

Other sizes and related products

Other sizes in this range: 5.5 x 100mm, 5.5 x 19mm, 5.5 x 25mm, 5.5 x 32mm, 5.5 x 38mm, 5.5 x 50mm, 5.5 x 70mm, 5.5 x 100mm, 5.5 x 19mm, 5.5 x 32mm.

Browse the full self-drilling tek & roofing screws range, or see our timber frame & landscaping screws and washers.

Nationwide delivery across Ireland – free on orders over €100.