12g X 25mm T17 Hex Flange with Seal Roofing Screw + Washer Galvanised C4 External Hex 500 Pack

When you're putting a roof together, you need screws that can handle the elements. These are 12 gauge (approx. 5.5mm) hardened steel screws, making them tough enough for the job. The 25mm length provides good penetration for securing roofing sheets without overdriving. Featuring a T17 slash point, these screws self-drill quickly and efficiently, saving you time and effort on site. Each screw has a hex flange head with a seal ensuring a watertight fit and preventing leaks. They're driven with a standard 5/16" hex socket (nutsetter), making them compatible with most drivers.

These screws are finished with a Galvanised Class 4 coating, giving them excellent corrosion resistance in external applications. That means they'll hold up against rain, sun, and salt spray, giving your roof long-lasting protection. This pack contains 500 screws, so you'll have plenty on hand for most roofing jobs. No need to be running back and forth to the suppliers when you can get the job done right the first time.