This product features a 1000-hour Dacromet coated hex head self-drilling screw with a 0.5+2.0mm aluminum composite EPDM bonded washer. The aluminum washer offers excellent corrosion resistance, while the EPDM bonded washer provides superior sealing and waterproofing performance, enhancing the screw’s rust protection.
Equipped with a #3 drill point tip, this screw requires no pre-drilling and can quickly penetrate metal sheets up to 3mm thick for secure fastening. Popular sizes include 5.5x19mm, 5.5x25mm, and 6.3x25mm.
The 1000-hour Dacromet surface treatment greatly improves the screw’s durability and lifespan. This product is ideal for various applications requiring long-lasting corrosion resistance.
We welcome any inquiries and are happy to provide free samples for quality testing. Please feel free to contact us anytime.
Keywords: hex washer head self drilling screw, hex self tapping screws, hex head self tapping screws with washer, hex washer head self tapping screw.
