Self-tapping screw for wood reinforced black 4,2x90 (100 pcs) "Russian Sel

Ultra-long self-tapping screw 4.2×90 mm with reinforced core and black phosphate coating, engineered for deep anchoring in wood. Perfect for structural timber, thick beams, and high-load applications requiring maximum penetration and holding power.

• 📐 Size: 4.2 × 90 mm

• 🪵 For wood applications

• 🔩 Reinforced core for extra strength

• ⚫ Black phosphate coating for corrosion resistance

• 🧰 Ideal for deep, structural timber fastening

• 📦 Pack of 100 pcs