7mm Sleeper & Joist Screws or Heavy Duty Heavy duty fixing for timber applications including: beams, rafters, stairs, floor joists, timber decking, wooden landscape retaining walls, fencing. Self-drilling, with heat treated shank for extra strength, and self-countersinking. Lubricated thread for ease of penetration; designed for maximum pull-out strength. Free hexagon driver bit included. Green organic coating gives great resistance to corrosion. CE approved.
