Ideal for fixing uPVC and timber frames directly to masonry. Flat Countersunk Head with 5 x Locking Ribs Deep High / Low Thread for High Pull-Out Resistance Zinc-Plated & Yellow-Passivated Carbon Steel Construction Fully Threaded Suitable for Both Domestic...

Zinc yellow-plated with hex head. Self-drilling point and turbo rifled shank provides easy driving and reduced splitting. Suitable for softwood, hardwood or masonry with a nylon plug. Flange Head with Reinforced Neck 40° Thread for Secure Fixing &...

PZ head. Single-thread, carbon steel decking screws. Organic coating. Partially threaded. Double-Countersunk Head with Underhead Ribs 40° Thread for Secure Fixing & High Pull-Out Resistance Silver Organic Coating Carbon Steel Construction Wax-Coated...

Zinc and blue-passivated and case-hardened. Tri-Lock threadform and shank incorporate the benefits of a single coarse thread with a twin thread start. Spiral point, part thread and under-head ribs for self-countersinking. Flush, neat fix will not work...