Forgefix TechFast Self-drilling Stitching Hex Screw Washer NO.1 Tip 6.3 X 25MM - Silver

The clamping thickness is 8mm.

The screws are 6.3 x 25mm.

The EPDM rubber washer provides a weather-tight seal, preventing water from penetrating the roofing system.

An 8mm hex head driver bit is required.

These screws are primarily designed for metal roofing sheets. Check the material compatibility before use.

The Elementech coating provides corrosion resistance. Ensure that the screws are stored in a dry environment.

They comply with EU safety, health, and environmental requirements.

Ensure the drill tip is centered and that you are applying sufficient pressure. Check the drill bit and screw head for damage. If necessary, pre-drill with a smaller pilot hole.

The hole may be too large, or the thread may be stripped. Remove the screw and try a new screw in a different location. Ensure correct driver bit size and adequate torque.

Make sure the washer is correctly placed between the screw head and the metal sheet. Over-tightening may also cause the seal to fail. Check for any damage to the washer.