Spectre & trade; Advanced Coach Screws are three times faster than a regular coach screw. They have a hex flange head and 60-degree deep single thread. The quick start type 17 slash point eliminates the need for a pilot hole in most cases, some hardwood may still need pre-drilling. They have been surface hardened with anti-corrosion Zinc Yellow coating for increased durability. Socket driver included. UKCA/CE approved for use in load-bearing timber construction. Box of 100 ForgeFix Spectre & trade; Coach Screw Hexagon Head ZY M6 x 25mm. Forgefix Spectre™ Coach Screw Hexagon Head ZY M6 x 25mm Box 100 in Gold