These self tapping washer head screws are built for speed, strength, and a neat, flush finish. I serve Wholesale buyers and Manufacturers who demand reliable parts, consistent threads, and fast delivery. Our range includes stainless steel and zinc-plated carbon steel options, with built in washers to seal joints and spread load without extra hardware. You will get corrosion resistance, good torque tolerance, and easy drive with compatible bits. I offer multiple sizes and finishes for bulk orders, private labeling, and just in time shipments. Each batch goes through strict quality checks to ensure correct thread engagement and predictable performance on metal, plastic, and thin sheet assemblies. I tailor packaging, lead times, and MOQ to your production line so you can scale confidently. If you want samples or a quote, reach out—I'm here to support Manufacturers with steady supply of high quality self tapping washer head screws.
As pioneers in fastener solutions, self-tapping washer head screws deliver peak performance. The integrated washer distributes clamping force, while the self-tapping feature seals through metal or composite substrates, enabling rapid, pre-drill-free installation. They excel in enclosures, appliances, electronics, automotive interiors, and outdoor assemblies where vibration, temperature changes, and moisture exposure are common. With material options in carbon steel and stainless variants, plus protective coatings, they adapt to corrosive environments and varying thicknesses, delivering consistent torque across cycles. The result is reduced assembly steps, lower labor costs, and a robust seal against ingress. When sourcing globally, prioritize material grade, coating, and dimensional tolerance; request test reports and batch traceability. Look for certifications (ISO 9001, RoHS, REACH) and perform pull-out, shear, and torque tests to verify performance under real loads. Clarify lead times, packaging, MOQs, and logistics terms. Choose suppliers offering samples, technical guidance, and post-sales support, with transparent QC and continuous improvement. A partner with rigorous QA and scalable manufacturing can guarantee repeatable performance across regions, keeping your supply chain resilient and installations secure.
| Attribute | Value |
|---|---|
| Product Category | Self-tapping washer head screws |
| Material | Carbon steel |
| Finish / Coating | Zinc electroplated (HDG) |
| Washer Diameter (mm) | 9.0 |
| Screw Diameter (d, mm) | 4.0 |
| Length (mm) | 16 |
| Thread Pitch (mm) | 0.8 |
| Head Style | Washer head |
| Tensile Strength (MPa) | 900 |
| Yield Strength (MPa) | 800 |
| Hardness (HRC) | 34–38 |
| Coating Thickness (μm) | 8–12 |
| Pilot Hole Required | Yes for metal thickness > 2.0 mm |
| Recommended Insertion Torque (N·m) | 2.3 N·m |
| Typical Applications | Enclosures, HVAC panels, automotive body parts |
| Quality Certification | ISO 9001 |