How Can Serrated Female Nails Prevent Loosening in High-Vibration Automotive Applications?

Our custom female nails feature 29 precisely engineered serrations under the head that create enhanced friction and anti-rotation properties, critical for automotive assemblies exposed to constant vibration. Combined with internal tapping capability and available in corrosion-resistant stainless steel grades (302HQ to 430SS), these fasteners ensure long-term reliability in demanding automotive environments. Every piece is inspected using advanced measurement tools and complies with ISO Working Instructions. Contact us to discuss your specific automotive fastening requirements and receive custom samples tailored to your assembly specifications.

With 45 years of fastener manufacturing expertise and production capabilities spanning head diameters from M1.6 to M16 (#00 to #5/8) and lengths from 1/8" to 12" (3.175mm to 600mm), Sen Chang Industrial delivers custom female nails engineered to your exact specifications. The 1/4-20*1.19" specification showcases our ability to produce complex geometries with serrated features that provide superior anti-rotation properties and enhanced clamping force distribution. Our multi-blow header technology, precision threading processes, and passivation treatments ensure consistent quality and performance across every production run. Whether you require standard configurations or specialized custom solutions, our ISO-compliant manufacturing processes and comprehensive quality control protocols guarantee fasteners that meet the most demanding industrial standards and application requirements.