ST4.2x13-50 Stainless Steel 401 Round Head Truss Head Self Drilling Self Tapping Washer Screw

Premium 401 stainless steel ensures superior corrosion resistance and durability for long-term outdoor or high-moisture applications. The self-drilling tip with integrated washer eliminates pre-drilling, saving time and labor costs on metal-to-metal or wood-to-metal installations. Truss head design provides wider load distribution and reduced surface damage, ideal for sheet metal, roofing, or HVAC projects. Precision-cut threads offer faster driving and stronger grip compared to standard screws. Bulk pricing available for contractors and wholesalers, backed by global logistics support.