This pack of 100 40mm Galvanised Steel Square Twist Nails Suitable for Joist Hangers The Timco brand is perfect for professional and diy projects in the United Kingdom. Made from Grade 2 Galvanised Steel with a head diameter of 8mm and a gauge of 3.75mm, these nails offer a durable and reliable fastening solution. The flat head style and galvanised finish ensure easy and secure installation, making them a practical choice for various applications. Whether you're a professional tradesperson or a DIY enthusiast, this pack of nails is sure to meet your needs.