Tired of tedious pre-drilling? Say goodbye to that hassle with DD Fasteners’ innovative self-drilling tek screws, designed specifically for fixing metal sheets to hot rolled steel sections ranging from 6.0mm to 12.5mm thick.

Featuring a bonded neoprene washer, these screws not only provide a secure hold but also ensure a watertight seal, perfect for outdoor projects and roofing applications.

Here’s why DD Fasteners’ Self Drilling Tek Screws stand out:

✅ No pre-drilling required, saving you time and effort on the job.
✅ Fine self-drilling thread (24TPI) engineered for heavy-duty steel, ensuring stability and reliability.
✅ No. 5 hardened carbon steel self-drilling point for enhanced drilling power.
✅ Zinc plated with RUSPERT coating for superior corrosion resistance, ensuring longevity even in harsh environments.
✅ Fully threaded and double-threaded for maximum grip and security.

Technical Specifications:
- Thread diameter: 5.5mm, 6.3mm, 7.1mm
- Screw length from under head: 25mm to 290mm
- Neoprene bonded washer diameter: 16mm
- Head type: Hexagon flange
- Head depth: 5mm
- Head diameter: 8mm (5/16”)
- Tek screw adapter size: 8mm (5/16”)

Partnering with DD Fasteners means unlocking efficiency and reliability in your engineering projects. Our screws boast exceptional drilling power, high stability, and unparalleled safety, making them ideal for a wide range of applications including chemical projects, agricultural structures, insulation installations, waterproof roofing, and more.

At DD Fasteners, we take pride in our end-to-end production process, ensuring strict quality control at every step. Plus, we offer OEM services to cater to your specific needs.

Join the ranks of satisfied customers worldwide and experience the DD Fasteners difference firsthand. Contact us today at felixyung@ddfasteners.com or visit our website at / for more information. Don’t miss out on the opportunity to revolutionize your projects with DD Fasteners!