From 6990 Wood screw, outdoors, 100 pcs. Pay & Collect Submit your order now and collect your items at your local Biltema store in 2 hours! This is how Pay & Collect work Surface treated to retain corrosion class C4. 1,500 hours of salt spray testing performed. Perfect for verandas, fences, and other outdoor wooden structures. 2 bits supplied. DIN 50018. EN14592.