{"product_id":"sedy-helicoil-thread-repair-kit-320-piece-metric-sae-inserts-with-heat-treated-taps","title":"SEDY Helicoil Thread Repair Kit 320-Piece — Metric \u0026 SAE Inserts with Heat‑Treated Taps","description":"\u003cp\u003e\u003cstrong\u003eSEDY Helicoil Thread Repair Tool Kit is a 320-piece repair set that restores damaged internal threads in engines, spark plug holes, bolts and studs using wire thread inserts, taps and drill bits.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen threads strip out of aluminum cylinder heads, engine blocks or other metal assemblies, replacements can be expensive and time-consuming. This complete SEDY kit gathers the drill sizes, taps, helicoil inserts, install and break-off tools you need to cut out damaged threads and install new, durable wire inserts for a dependable repair that fits both metric and SAE fasteners.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the kit repair stripped spark plug or bolt holes?\u003c\/h3\u003e\n\n\u003cp\u003eFirst, a matching 135° drill bit enlarges the damaged hole to the correct diameter. Next, the supplied tap creates fresh threads sized for the helicoil insert; the insert is installed and the tang is broken off to leave a factory-like internal thread.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes drill bits with 135° tips for accurate hole prep\u003c\/li\u003e\n  \u003cli\u003eTaps for both metric and SAE sizes included\u003c\/li\u003e\n  \u003cli\u003eInstall tool seats the wire coil precisely in the new thread\u003c\/li\u003e\n  \u003cli\u003eBreak-off tool trims the coil tang cleanly for immediate use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich sizes and standards are covered in the set?\u003c\/h3\u003e\n\n\u003cp\u003eSEDY’s 320-piece assortment supports common automotive and machinery thread sizes across metric and SAE standards. That makes it suitable for many engines, transmissions and industrial applications where both inch and metric fasteners are encountered.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSAE sizes: 1\/4\", 5\/16\", 3\/8\", 7\/16\", 1\/2\"\u003c\/li\u003e\n  \u003cli\u003eMetric sizes: M5, M6, M8, M10, M12\u003c\/li\u003e\n  \u003cli\u003eMultiple helicoil insert counts and lengths for varied hole depths\u003c\/li\u003e\n  \u003cli\u003eTap and drill matched sets for each thread size\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and tools are included, and how durable are they?\u003c\/h3\u003e\n\n\u003cp\u003eAll critical tools are made from heat-treated premium steel for improved wear resistance and repeatable performance. The kit contains a mix of hardened taps, twist drills, installation tools, break-off drivers and a broad inventory of helicoil inserts so you can complete repairs without sourcing extra parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeat-treated steel taps and drivers for long service life\u003c\/li\u003e\n  \u003cli\u003ePrecision-formed wire thread inserts that restore original thread strength\u003c\/li\u003e\n  \u003cli\u003eOrganized case keeps tools protected and easy to access\u003c\/li\u003e\n  \u003cli\u003eTools built to withstand repeated automotive repair use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to use this kit for a DIY repair?\u003c\/h3\u003e\n\n\u003cp\u003eThe workflow—drill, tap, insert, break—is straightforward and described by most guides and tutorials; basic hand tools and a steady hand are usually sufficient. The included installation and break-off tools speed alignment and cleanup, helping even hobby mechanics achieve consistent results without specialized machinery.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClear step-by-step process: drill, tap, install, break off\u003c\/li\u003e\n  \u003cli\u003eHand-operated install and break tools provided for control\u003c\/li\u003e\n  \u003cli\u003eCompact case keeps sets ordered by size for quick selection\u003c\/li\u003e\n  \u003cli\u003eSuitable for garage repairs, maintenance shops, and fieldwork\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The SEDY Helicoil Thread Repair Tool Kit suits automotive technicians, home mechanics, small engine repairers and industrial maintenance teams who need a ready-made solution to restore damaged internal threads. If you work with aluminum heads, motor mounts, spark plug holes or any stripped fastener openings and want to avoid part replacement or welding, this comprehensive, portable set gives you the drills, taps, inserts and tools to complete most rethreading jobs on-site or in the shop.\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 this kit repair aluminum spark plug threads?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Use the correct drill and tap size, install a helicoil insert, then break off the tang to restore durable spark plug threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the set include both metric and SAE sizes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 320-piece kit covers common metric (M5–M12) and SAE (1\/4\"–1\/2\") sizes with matched drills, taps and inserts.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SEDY","offers":[{"title":"Default Title","offer_id":48087745986718,"sku":"B0CJDTR6V6","price":75.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/sedy-front-case-open_df012320-0336-4806-999c-ce0beb68e43e.jpg?v=1785930179","url":"https:\/\/northtrailauto.ca\/products\/sedy-helicoil-thread-repair-kit-320-piece-metric-sae-inserts-with-heat-treated-taps","provider":"North Trail Auto","version":"1.0","type":"link"}