M16 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts

M16 x 200mm Hot Dip Galvanised Cup Head Bolts & Nuts are built for maximum strength in deep timber connections. With a heavy-duty 16mm diameter and extended 200mm length, these bolts are perfect for securing thick posts, beams, and structural framing in outdoor environments. The hot-dip galvanised coating offers long-lasting resistance to rust and corrosion, even in coastal or exposed areas. Featuring a smooth, round cup head, these bolts provide a flush finish that’s both tamper-resistant and visually clean—ideal for decks, pergolas, and retaining walls.