Wafer head screws self drilling
No pre-drilling required.Fast installation.
Holds firm, saves time.
Phillips head for easy driving.
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Sinsun Wafer Head Self-Drilling Screws:The Flush, Sealed Fastening Solution
Discover Sinsun Wafer Head Self-Drilling Screws. Their low-profile, washer-integrated head provides a flat finish and weather-resistant seal, eliminating pre-drilling for metal roofing, cladding & trim.
Get a Quick QouteIntroduction & Features
The Sinsun Wafer Head Self-Drilling Screws offer superior fastening performance and a sleek, low-profile design. This washer is permanently fused to the head, creating a wide bearing surface that distributes load evenly and prevents pull-through. a wide bearing surface that distributes load evenly and prevents pull-through. This design is inherently water-resistant, making it ideal for exterior applications. With the self-drilling tip, drilling, tapping, and fastening can be completed in a single operation, saving significant time and labor. The flush appearance and reliable seal make them ideal for sheet metal, roofing, siding, and automotive trim.
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Sinsun offers a comprehensive range to meet diverse project needs. Our Wafer Head screws are defined by their key.
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Head Type: True wafer head with integrated flat washer.
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Drive Type: Phillips (PH2) or Hex Washer Head (HWH) for high-torque applications.
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Material:Carbon Steel with Zinc Plating (standard corrosion resistance)Carbon Steel with Dacromet Coating (superior corrosion resistance for harsh environments)
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| Feature | Wafer Head Self-Drilling Screw | Truss Head Self-Drilling Screw |
| Head Profile | Exceptionally low-profile, flat head with a wide, integrated washer. | Wide, dome-shaped head with a rounded underside. |
| Key Physical Trait | Head and washer are a single, fused unit. The head is very thin. | Head is a thicker, individual dome with a large diameter. |
| Primary Function | 1. Maximize bearing surface. | 1. Provide wide load distribution. |
| 2. Create a flush, clean finish. | 2. Prevent pull-through in soft/brittle materials. | |
| 3. Facilitate an effective seal (with gasket). | ||
| Sealing Capability | Excellent. The flat washer base is ideal for compressing a rubber/EPDM sealing washer for weatherproofing. | Fair/Poor. The rounded underside is not designed for creating an effective sealed joint. |
| Typical Applications | Metal roofing, cladding, solar mounts – where sealing and a flat appearance are critical. | Plastics, thin sheet metal, wood assemblies, electrical enclosures – where preventing material damage is key. |
| Visual Analogy | A flat button with a large, attached washer. | A wide, smooth mushroom cap or dome. |
Choose a Wafer Head for a sealed, flush finish on exposed surfaces like roofing. Choose a Truss Head for superior grip and pull-through prevention in softer materials like plastic or thin wood, where a perfect seal is not required.
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Q: What is the price for these wafer head screws?
A: Pricing is highly competitive and varies based on material/coating, size (diameter & length), drill point, and quantity. For example, a box of 1,000 pcs of Zinc Plated #10 x 1" screws is typically more economical per unit than a box of 100 pcs. We offer significant discounts on bulk and pallet quantities. For an exact quote tailored to your project specifications and volume, please contact our sales team.
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Q: Do you offer free samples?
A: Yes, Sinsun is confident in our product quality. We are happy to provide a limited number of free samples for qualified businesses and contractors to evaluate performance firsthand.
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Q: What's the lead time for orders?
A: Standard items are usually ready for shipment within 3-5 business days. For large custom orders (specific coating, size), lead times will be confirmed at the time of quotation.
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Q: Are these screws suitable for attaching metal roofing?
A: Absolutely. This is one of their primary applications. We recommend selecting a model with a Dacromet coating and an EPDM sealing washer for maximum longevity and weather-tight performance on standing seam or corrugated metal roofs.
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Q: Can I use them on wood?
A: Yes, especially when fastening metal brackets, flashing, or trim to wooden frames. For pure wood-to-wood applications, a standard wood screw might be more suitable, but the self-drilling feature remains useful for hardwoods or when driving through a metal component into wood.
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