Cup Square Bolts, also known as Cup Head Square Neck Bolts, are durable fastening solutions designed to provide secure, anti-rotation fixing in wood, steel, and structural applications. Featuring a rounded cup head and a square neck beneath the head, these bolts prevent turning during installation, ensuring a strong and reliable hold.

The smooth, domed head delivers a clean, tamper-resistant finish, while the square neck locks firmly into the material when tightened. These bolts are widely used in construction, timber structures, fencing, and general engineering projects.