DUAL SELF-TAPPING THREAD DESIGN--- Features a unique double-ended thread that acts as a powerful internal connector. Drill pilot holes and screw both ends into separate pieces to join them together. Creates a strong, hidden fastener that pulls materials tightly for a secure connection.
IDEAL FOR FURNITURE & WOOD ASSEMBLY--- Specifically designed for sofas, cabinets, tables, stairs, and chairs. Perfect for joining wood, particle board, MDF, and plywood (approx. 1/2 to 3/4 inch thickness). Provides much stronger connections than standard screws for internal joining applications.
CORROSION-RESISTANT ZINC COATING--- Made from durable carbon steel with protective zinc plating. Offers good rust resistance for indoor furniture and DIY projects. Ensures longevity and structural integrity of your assembled pieces without premature corrosion issues.
COMPREHENSIVE SIZE ASSORTMENT--- Available in M4, M5, and M6 diameters with lengths from 20mm to 35mm (approx. 0.8 to 1.4 inches). Each listing includes 50 pieces of a single size – enough fasteners for complete furniture or cabinetry projects.
EASY & INVISIBLE FASTENING--- The screw is entirely hidden within materials, leaving no visible screw heads on the outside. Creates a clean, professional finish without needing to plug or cover screw holes. Perfect for visible furniture surfaces and fine woodworking.

Double ended self-tapping thread – powerful internal connector for wood assembly

Zinc plated carbon steel construction – good rust resistance for indoor use

Available sizes: M4, M5, M6 diameters with lengths from 20mm to 35mm (approx. 0.8 to 1.4 inches)

Package includes 50 pieces of one selected size – bulk pack for complete projects

Applications: furniture, sofa frames, cabinets, chairs, tables, stairs, bookcases, workbenches

Pro tip – drill pilot hole slightly smaller than screw core diameter to prevent wood splitting while ensuring tight grip

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