JLHY's self drilling screws with hex washer heads are purpose-built for fast metal-to-metal and metal-to-wood fastening without the need for any predrilling. The built-in drill point cuts through steel cleanly, while the hex washer head provides a large bearing surface that distributes load evenly and resists pull-through in sheet metal applications. Zinc plating offers reliable corrosion resistance for indoor and covered outdoor applications at an economical price point.

The hex washer head design works perfectly with standard hex sockets and impact drivers, delivering high torque without the cam-out issues associated with Phillips or slotted drives. This makes self drilling hex washer screws ideal for high-volume production assembly lines, HVAC installations, roofing, and general metal fabrication where speed and reliability are both essential.

JLHY's self drilling screws are manufactured with precision-formed drill points that stay sharp through multiple drives and cut consistently through steel up to 3mm thick. The fine thread provides strong holding power in both steel and softer substrates. Our quality system includes regular torque testing and drill point sharpness checks on every production batch.

Standard products comply with DIN 7504N specifications, and we offer a full range of lengths from 13mm to 75mm in diameters from #6 to #14. Custom lengths, finishes (including dacromet and HDG), and packaging options are available for OEM customers with specific requirements.

Contact JLHY for technical specifications, volume pricing, and sample requests.