Screws
Hex Flange Self-Drilling Screws
Self-Drilling Roofing Screws with EPDM Washer
Our Hex Flange Self-Drilling Screws feature an integrated hexagonal flange head with a bonded EPDM rubber washer, providing excellent weather sealing and load distribution. The self-drilling point eliminates the need for pre-drilling, allowing direct fastening into steel purlins and sheet metal. These screws are manufactured with precision cold heading and heat treatment for consistent hardness and superior drilling performance. Widely used in roofing, cladding, and steel structure construction.
Key Features
Technical Specifications
| Product Name | Hex Flange Self-Drilling Screws |
| Chinese Name | 六角法兰钻尾螺丝 |
| Brand | ZCM / Zhongchun |
| Material | Carbon Steel, Stainless Steel (410) |
| Size Range | #8 - #14 (4.2mm - 6.3mm) |
| Length Range | 13mm - 150mm |
| Thread | Full Thread, Self-Drilling Point |
| Head Type | Hex Flange Head with integrated washer |
| Washer | EPDM bonded washer for weather sealing |
| Surface Treatment | Zinc Plated (Yellow/Blue), Dacromet, Ruspert, HDG |
| Standards | DIN 7504K, GB/T 15856.1, Custom |
| Drill Point | Self-drilling point for steel up to 12mm |
| Packaging | Carton + Pallet, or per customer request |
| MOQ | Contact us for details |
| Lead Time | 15-20 days for standard orders |
Applications
Hex Flange Self-Drilling Screws are essential fasteners in steel construction and roofing, providing secure, weather-tight connections.
Interested in Hex Flange Self-Drilling Screws?
Send us your specifications for a competitive quote. Standard orders delivered in 15-20 days.