Need Self-Drilling Fasteners That Eliminate Pre-Drilling in Structural Steel Assembly?

Our 410SS flat head square drive drilling screws feature precision-engineered #2 drilling tails that penetrate metal substrates without pre-drilling, reducing installation time by up to 60%. The square drive design prevents cam-out during high-torque applications, ensuring consistent flush mounting in structural assemblies. ISO-compliant manufacturing with multi-blow headers guarantees dimensional accuracy for your automated assembly lines. Contact us for samples tested to your specific gauge requirements.

Every fastener is rigorously inspected during production and before shipment, complying with ISO Working Instructions to guarantee consistent quality. Our comprehensive inspection protocol employs calipers, protrusion-height gauges, micrometers, and 2.5D/2D projectors to verify critical measurement points including head diameter, head height, square drive depth, drilling tail dimensions, major and minor diameters, thread angle, and pitch. Backed by 45 years of stainless steel fastener manufacturing expertise and salt spray testing validation, Sen Chang Industrial delivers reliable drilling screws that meet the exacting standards of OEM manufacturers and aftermarket customers requiring high-performance self-drilling fastening solutions for specialized applications.