M16 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts

M16 x 180mm Hot Dip Galvanised Cup Head Bolts & Nuts are designed for high-strength timber connections in large-scale outdoor and structural builds. With a solid 16mm diameter and extra-long 180mm shaft, they deliver deep anchoring and dependable performance in thick timber applications. The hot-dip galvanised finish ensures maximum corrosion resistance, making them ideal for harsh weather and coastal areas. The smooth cup head offers a clean, tamper-resistant look, perfect for use in decks, landscaping, framing, and industrial timber work.