Timco Heavy-Duty Hex Self-Drilling Screws, EPDM Washer, 5.5x80mm (100pk)
100x Timco 5.5x80mm hex self-drilling screws with EPDM washers for heavy steel construction. Corrosion-resistant silver organic finish.
The Timco Heavy-Duty Hex Self-Drilling Screws are designed for robust metal-to-steel fastening applications without requiring pre-drilling. These screws feature a partially threaded design with a case & core hardened carbon steel construction for superior strength and durability in demanding environments.
Their exterior silver organic plating provides exceptional corrosion resistance, proven to withstand 500 hours of salt-spray testing, making them ideal for outdoor and marine applications. The integrated EPDM washer ensures a weatherproof seal while the No.5 self-drilling point penetrates up to 12mm thick steel sections with ease.
Key Features:
- No pre-drilling required - Saves time on installation
- Hex head design - Allows for secure torque application with 8mm socket
- EPDM washers - Provide superior weather sealing
- Partial threading - 53mm effective thread length for optimal grip
- Industrial-grade corrosion resistance - Silver organic finish withstands harsh conditions
These premium construction screws come in a convenient 100-piece pack, offering great value for professional tradespeople working with heavy-gauge metal fabrication, roofing, cladding, and structural steelwork.
Technical Specifications
- Shipped within 0-2 business days
- Shipping to Worldwide: 6-7 business days*
- Free Shipping Included
- Metal-to-steel construction
- Heavy section steel joining (up to 12mm)
- Outdoor metal structures
- Roofing installations
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- Thread Diameter: 5.5mm
- Length: 81mm
- Head Type: Hex
- Washer Diameter: 12.00mm (EPDM)
- Point Type: Self-Drilling No.5
- Socket Size: 8mm
- Finish: Silver Organic (Exterior grade)
- Material: Case & Core Hardened Carbon Steel
- Effective Thread Length: 53mm (Partially Threaded)
- Max Drilling Thickness: 12.0mm
- Corrosion Resistance: 500 hours salt-spray tested
- Pack Quantity: 100 pieces
- Weight: 1394g
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