{"product_id":"kungjuer-helicoil-metric-thread-repair-insert-kit-2","title":"KUNGJUER Helicoil Metric Thread Repair Insert Kit","description":"\u003cp\u003e\u003cstrong\u003eThe KUNGJUER Helicoil Metric Thread Repair Insert Kit M12x1.75 is a complete rethreading solution for restoring damaged M12 threads quickly and reliably.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf a stud, bolt, or tapped hole has stripped threads, this M12 repair kit gives you everything needed to return the part to usable condition without replacing the whole component. The set bundles a drill, HSS tap, installation and break-off tools, coil inserts, wrench, and a durable storage case so you can repair internal threads in engines, panels, or machinery using aluminium, steel, magnesium and other common metals.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit restore stripped M12x1.75 threads?\u003c\/h3\u003e\n\u003cp\u003eThe kit works by enlarging the damaged hole to a controlled size, cutting a new thread with the supplied tap, and inserting a stainless steel helicoil to recreate the original M12x1.75 female thread. The helicoil forms a hard, wear-resistant internal coil that accepts the original bolt size and pitch.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e12.4 mm twist drill to clear the damaged threads\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel tap that cuts precise M12x1.75 threads\u003c\/li\u003e\n  \u003cli\u003eStainless steel inserts that act as new internal threads\u003c\/li\u003e\n  \u003cli\u003eBreak-off tool to remove the installation tang cleanly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich materials and applications are suitable for these inserts?\u003c\/h3\u003e\n\u003cp\u003eThis set is designed for use in soft and medium-hard metals where original tapped threads may fail—aluminium, iron, carbon steel, bronze and magnesium are all supported. Typical uses include automotive engine blocks, gearbox housings, exhaust brackets, and structural components requiring strengthened threads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngine and automotive repair: restore bolt holes in cylinder heads and blocks\u003c\/li\u003e\n  \u003cli\u003eMaintenance of industrial equipment and small machinery\u003c\/li\u003e\n  \u003cli\u003eMarine and hobby fabrication using soft alloys\u003c\/li\u003e\n  \u003cli\u003eAnywhere a durable M12 thread replacement is needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat tools are included and how do they make repairs easier?\u003c\/h3\u003e\n\u003cp\u003eThe kit supplies each step’s tool so you don’t need additional parts: a dedicated drill clears damaged material, a precisely ground HSS tap forms the correct thread profile, and an installation tool seats the helicoil properly. An ergonomic handle, hex wrench, and breaking pin tool improve control and finish, while the engraved bits aid fast identification on the job.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDrill bit (≈12.4 mm) and HSS tap matched for M12x1.75 inserts\u003c\/li\u003e\n  \u003cli\u003eInstallation tool and breaking pin for secure seating and tang removal\u003c\/li\u003e\n  \u003cli\u003eHex wrench for controlled insertion and torque\u003c\/li\u003e\n  \u003cli\u003eCompact iron carry case for organized storage and transport\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and precise are the helicoil inserts?\u003c\/h3\u003e\n\u003cp\u003eEach insert is manufactured from precision stainless steel wire to offer corrosion resistance, improved wear properties and consistent thread engagement. Using a helicoil replaces the weak original thread surface with a tougher, fatigue-resistant coil that helps prevent future stripping.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless steel coils for strength and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eConsistent dimensional tolerances for secure bolt fit\u003c\/li\u003e\n  \u003cli\u003eImproved fatigue life compared with damaged tapped holes\u003c\/li\u003e\n  \u003cli\u003eSuitable for repeated bolt changes and maintenance cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Technicians, mechanics, home DIYers, and maintenance personnel who encounter stripped M12 threads and want a reliable repair without replacing parts will find this kit useful. It’s aimed at people who need a compact, complete solution for rethreading M12x1.75 holes in engines, equipment, or metal fabrications and who value clear tool identification, durable inserts, and a portable case for on-site repairs.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this kit on aluminum parts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit is suitable for aluminium and other soft metals like magnesium and bronze when restoring M12x1.75 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many inserts are included and are they stainless?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes ten stainless steel helicoil inserts, designed for corrosion resistance and long-lasting thread strength.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KUNGJUER","offers":[{"title":"Default Title","offer_id":48087702864030,"sku":"B0FMDHSYHZ","price":37.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kungjuer-m12x1-75-front-packaging.jpg?v=1785929207","url":"https:\/\/northtrailauto.ca\/products\/kungjuer-helicoil-metric-thread-repair-insert-kit-2","provider":"North Trail Auto","version":"1.0","type":"link"}