Premium Low-Profile Fasteners for Metal Framing & Roofing Looking for high-performance pancake head self-drilling screws in bulk? At CDE Fasteners, Inc., we supply professional-grade low-profile screws designed for flush/flat assembly in metal-to-metal applications. Whether you need 410 Stainless Steel for hardness or 1000-hour Salt Spray rated coatings for corrosion resistance, our inventory is in stock and ready to ship immediately to your job site.