M4.2–M6.3 410 Stainless Steel External Hexagon Flange Head Self-Tapping Screw with PVC Washer

M4.2–M6.3 410 Stainless Steel External Hexagon Flange Head Self-Tapping Screw with PVC Washer

410 stainless steel external hexagon flange head self-tapping screws with integrated PVC sealing washer for weatherproof sheet metal, roofing, and cladding fastening. The PVC washer compresses against the sheet metal surface when tightened, creating a watertight seal around the screw hole. 410 martensitic stainless steel provides corrosion resistance for outdoor and roofing applications.

Key Specifications

Why Choose Hex Flange Self-Tapping Screws with PVC Washer?

• Integrated PVC sealing washer — creates watertight seal around screw hole; prevents water ingress in roofing and cladding
• 410 stainless steel — corrosion-resistant for outdoor, roofing, and coastal applications
• Hex head drive — high torque with standard hex sockets and power drivers; no cam-out
• Flange head — large bearing surface distributes load; prevents pull-through in thin sheet metal
• Self-tapping thread — cuts its own thread in sheet metal without pre-drilling or tapping

Typical Applications

• Metal roofing and cladding panel fastening
• Steel building and agricultural shed construction
• HVAC ductwork and sheet metal assembly
• Solar panel mounting on metal roofs
• General outdoor sheet metal fastening requiring weatherproof seal

Package Contents

• 410 SS hex flange head self-tapping screws with PVC washer (quantity and size per selected variant)