Self-drilling screw Koelner/Rawlplug R-SL3-OD48035T8004 4.8x35 mm RAL8004 is a corrosion-resistant fastener finished in brown (RAL8004). Sized at 4.8 x 35 mm and supplied as a pack of 150 pieces, this screw features an integrated drill point that allows direct fastening into thin metal sections and steel profiles without prior pilot drilling. It is intended for applications such as roofing sheets, metal cladding and light metal assemblies where a coated, durable screw is required.
Advantages
The integrated self-drilling point reduces installation time by eliminating pre-drilling and simplifies assembly when working with thin-gauge steel or metal profiles. The brown RAL8004 coating provides corrosion protection and a visually matching finish for applications where appearance matters. Supplied in a bulk pack of 150 pieces, the set is suitable for medium-sized jobs and for keeping a consistent stock of fasteners on site.
Suitable for
- Fixing roofing sheets to metal purlins and supports
- Attaching metal cladding and facade panels
- Light structural metal assemblies and accessory mounting
- Applications requiring a brown-coated screw for visual matching
When it may not be suitable
This self-drilling screw is not intended for use in thick structural steel that exceeds the drilling capacity of the screw point; in such cases pre-drilling or different fasteners are required. It is also not intended for use with untreated timber, masonry, or concrete where dedicated fasteners are more appropriate.
Key specifications
- Diameter and length: 4.8 x 35 mm
- Head/drive: coated hex or similar suitable drive for powered installation (matching driver recommended)
- Point type: integrated self-drilling point for metal-to-metal fastening
- Finish: corrosion-resistant brown coating (RAL8004)
- Pack quantity: 150 pieces
- Typical uses: roofing, cladding, light metalwork
How to use
Position the screw at the required fastening point and use an appropriate powered screwdriver or wrench with the matching bit or socket. Apply steady pressure and a controlled speed to allow the self-drilling point to cut through the metal profile and form an effective mating thread. Tighten until the head is seated flush or to the torque recommended for the substrate thickness; avoid over-torquing which can deform the sheet or strip the thread.
What to consider before purchase
- Confirm the screw length and diameter are suitable for the combined thickness of materials to be fastened.
- Check that the self-drilling capacity matches the metal gauge you will be working with.
- Ensure the brown RAL8004 finish is acceptable for visual and corrosion performance in your environment.
Usage recommendations
For best results use with a calibrated cordless driver or low-speed impact driver, maintain perpendicular alignment during installation, and store the screws in a dry place to preserve the coating. For thicker or hardened steel, test a sample fastening and consider pre-drilling or a dedicated fastener type.
