General description Spectre by Forgefix incorporates advanced features typically found in premium screws, making them ideal for various wood applications. These advanced multi-purpose wood screws are designed for durability and ease of use. Technical specifications Size: 4.0 x 40mm Thread: Fully threaded Pack Quantity: Tub of 1,200 Finish: Zinc yellow passivated for excellent corrosion resistance Head Type: Countersunk, pozidrive compatible, recessed head Thread Design: Sawtooth thread to prevent splitting, reamer to prevent jacking (for screws 50mm and above) Point Type: Quick start type 17 slash point Other information CE approved for use in load-bearing timber construction