Timco 6.3 x 25 Stitching Screws - Hex - For Sheet Steel - Exterior - Silver - With EPDM Washer (S25W16BB) - 120 Pieces TIMbag

Used for stitching two metal roofing sheets together without the need to pre-drill a hole (Max. 1.6mm). Self-drilling point and tapered shank, with a washered hexagon head.

Exterior plating gives a reliable and durable corrosion resistant coating which resists 1,000 hours salt-spray