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These 100-piece stainless steel self-drilling screws deliver reliable fastening for construction and repair applications. Featuring 410-grade stainless steel construction, they resist corrosion and maintain strength in demanding environments. The outer hexagonal head design provides superior grip and torque control, while the self-drilling tip eliminates pre-drilling requirements, saving time on installation. Available in M4.2 and M4.8 sizes with 13mm length options, these versatile fasteners work across metal, composite, and softer materials. Ideal for HVAC systems, automotive work, and general maintenance tasks where durability and ease of use matter.