The natural corrosion resistance of these stainless steel Tek screws is further enhanced with a silver slide coating. In addition to providing extra protection against damaging corrosion, the coating also works to reduce screw-in resistance, making the job easier and quicker. All in all, the screws offer much improvement as compared to Grade 410 stainless steel or carbon steel screws, both of which are susceptible to corrosion.

Bi-metal self-drilling screws are designed to deliver a durable solution and are revolutionising metal fabrication right across Europe and beyond. By drilling, shaping the thread and tightening all in one single, fluid process, the screws provide exceptional time-savings and related lower labour costs.

We can supply these innovative screws either with or without EPDM-bonded/­polyamide washers. A full range of head types is available including pan head square slot, pan head Philips, hexagon and hexagon slotted. If required and subject to minimum quantities, DD Fasteners can supply bi-metal self-drilling screws coloured with a powder or liquid coating for aesthetic or colour-coding purposes. Diameters range from 3.9mm to 6.3mm and lengths range from 12mm to 50mm.

All of our bi-metal screws  and diverse testing and quality control procedures to ensure premium quality. Find out more about these procedures on the on our website , contact our expert technical team for further information and advice.

Website :