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Key Specifications - Internal thread M8 x 1.25mm, length 20mm, outer diameter 13mm, flange diameter 14mm; requires 11mm pilot hole. Core Advantage - Coarse external threads cut cleanly into wood to provide rigid anchor points that resist pull-out and joint loosening under vibration. Versatile Compatibility - Fits standard M8 bolts and metric machine screws; designed for wooden cabinets, wardrobes, bed frames, and timber joinery. Durable Construction - Made of carbon steel with yellow zinc plating for wear resistance, rust protection, and dependable long-term structural hold. Package Contents - 25 pieces M8 x 20mm hex socket drive threaded insert nuts for wooden furniture assembly and timber repairs.