The Hobsons T9PM9SH1016025 Hex Head Seal Screw 10-16 x 25mm is a premium self-drilling fastener designed for secure metal-to-metal fixing in demanding applications. Featuring a durable hex head and integrated sealing washer, it provides a reliable weather-resistant seal for roofing, cladding and general steel construction. The 25mm length offers increased penetration and holding strength, ensuring a strong and dependable connection. Supplied in a trade-ready box, it is an ideal choice for professional builders and contractors.