M16 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts

M16 x 260mm Hot Dip Galvanised Cup Head Bolts & Nuts are designed for deep, high-strength timber fixing in structural and outdoor applications. With a robust 16mm diameter and extra-long 260mm length, these bolts deliver powerful hold for oversized beams, posts, and heavy construction elements. The hot-dip galvanised finish provides superior rust protection, making them perfect for coastal, wet, and exposed environments. The smooth cup head ensures a neat, flush appearance and added tamper resistance—ideal for decks, fences, pergolas, and retaining walls.