
Premium M3.5*35 Star Drive Self Tapping Screws with Wings. Wing Design for Steel Substrate: Wings bore through wood decking before snapping off to allow self-drilling tip to drill through steel. High-Strength Alloy Steel Material: Made with alloy steel and case-hardened to reduce breaking during installation. Wide Range of Surface Treatments: Available in Hot Galvanized, Black, Color-Zinc, Blue White Zinc, Dacromet, and more. Comprehensive Certification Standards: Compliant with ISO, DIN, GB, ANSI, BSW, JIS, and GOST international standards. Full Customization Services: Offer tailored solutions for unique head shapes, thread types, lengths, and materials. Strict Quality Control Process: 100% QC checks for dimensional accuracy, torque resistance, and corrosion resistance. Flexible MOQ for Small Orders: Standard MOQ starts from 100,000 pieces, with lower options for special cases. 24/7 After-Sales Support: Dedicated team available around the clock to resolve any customer issues.