Kosiy #14 X 4 Heavy Duty Black Timber/Log/Landscaping Wood Screws - Exterior Coated Heavy Duty Screws (50 Count Screw Count - Heavy Duty Black Log Wood Screws) : Amazon.co.uk: Business, Industry & Science
M12 12mm Hex Coach Screw A2 304 Stainless Steel Heavy Duty – Fixaball Ltd. Fixings and Fasteners UK
GENUINE TIMBERLOK HEAVY DUTY WOOD & SLEEPER SCREWS - BRAND NEW | eBay
TimberLok Screws | Heavy Duty Hex Wood Screws & Fixings - Fast Build Supplies