Metric Thread Repair Inserts, 140-Pcs 304 Stainless Steel, M3-M12

Key features

• RESTORE STRIPPED METRIC THREADS - This 140-piece wire thread insert assortment helps repair worn or damaged internal threads and reinforce tapped holes, supporting a more secure fastening point for repeated assembly.
• SEVEN COMMON METRIC SIZES - Includes M3, M4, M5, M6, M8, M10, and M12 inserts in one assortment, giving mechanics, machinists, maintenance teams, and DIY users options for automotive, machinery, engine, tool, and equipment repairs.
• 304 STAINLESS STEEL - Precision-formed wire inserts resist rust, corrosion, and wear in demanding work environments, helping extend the usable life of repaired threaded components.
• DISTRIBUTES LOAD ACROSS THE THREAD - The spring-like coil design spreads force through the threaded hole to help reduce localized wear and vibration-related loosening during repeated fastening.
• ORGANIZED INSERTS-ONLY ASSORTMENT - All seven sizes are separated in a storage case for quick selection. Confirm thread size, pitch, insert length, and compatible drill, STI tap, installation tool, and tang-break method before use; tools are not listed as included.

Free shipping included. 30-day hassle-free returns.