Release time：2020-01-16 18:44 Browse：
Product Name: 6.3/6.3 Bi-Metal Self-Drilling Screw (Ruspert Coating / Hex Washer Head / EPDM Washer / Hardened Steel)
Description:
This screw is made of high-strength 10B21 carbon steel with a hardened body for excellent shear and torsional resistance. The surface is treated with Ruspert coating, providing superior corrosion protection with up to 1000 hours of salt spray resistance.
It features a 6.3/6.3 bi-thread design and a #3 drill point, ensuring fast and stable drilling through steel sheets up to 3.0mm thick. The hex washer head, combined with a black EPDM bonded washer, offers secure fastening and long-lasting waterproof performance, making it ideal for outdoor steel construction, metal roofing, and solar panel systems.
Key Features:
Material: Hardened 10B21 carbon steel for high strength
Surface Treatment: Ruspert coating, ≥1000 hrs salt spray resistance
Drill Point: #3 self-drilling tip for mid-thickness steel penetration
Head Type: Hex washer head with black EPDM sealing washer
Thread: 6.3mm double-thread design for enhanced pull-out resistance
Length: Customizable from 100mm to 450mm
Applications:
Metal roofing, steel structure connections, solar panel frames, prefabricated buildings, and industrial outdoor fastenings
