{"product_id":"tommars-thread-chaser-set-49-piece-unc-unf-metric-kit-hardened-carbon-steel-color-coded","title":"TOMMARS Thread Chaser Set — 49-Piece UNC, UNF \u0026 Metric Kit, Hardened Carbon Steel, Color-Coded","description":"\u003cp\u003e\u003cstrong\u003eTOMMARS 49-piece Thread Chaser Set is a complete UNC, UNF and metric thread chasing kit designed to clean and restore damaged threads without removing useful metal.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis organized thread repair kit supplies 49 color-coded taps and dies in UNC (silver), UNF (black) and metric (gold) sizes so you can chase corroded or dirty fasteners and bolt holes quickly on engines, machinery and vehicle bodies. Built from hardened carbon steel with hex-shaped tools for wrench or socket fitting, the set focuses on thread restoration rather than re-cutting, helping preserve part integrity while making future fastening reliable.\u003c\/p\u003e\n\n\u003ch3\u003eWhat sizes and standards are included in the set?\u003c\/h3\u003e\n\u003cp\u003eThe kit covers common SAE coarse (UNC) and fine (UNF) threads plus widely used metric pitches for automotive and mechanical repairs. Sizes are grouped and color-coded for fast selection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUNC (silver): 5\/8\"-11, 9\/16\"-12, 1\/2\"-13, 7\/16\"-14, 3\/8\"-16, 5\/16\"-18, 1\/4\"-20\u003c\/li\u003e\n  \u003cli\u003eUNF (black): 5\/8\"-18, 9\/16\"-18, 1\/2\"-20, 7\/16\"-20, 3\/8\"-24, 5\/16\"-24, 1\/4\"-28\u003c\/li\u003e\n  \u003cli\u003eMetric (gold): M14×1.5, M12×1.75, M12×1.5, M12×1.25, M11×1.5, M10×1.5, M10×1.25, M10×1.0, M8×1.25, M6×1.0\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this set restore threads without cutting away metal?\u003c\/h3\u003e\n\u003cp\u003eThread chasers are specially ground to clean and realign worn threads instead of rethreading or tapping new material, so the original fastener fit is preserved. They remove corrosion, grease and debris while reshaping the thread profile gently.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChasers re-form damaged crests and roots without removing base material.\u003c\/li\u003e\n  \u003cli\u003eDesigned for chasing seized or rusty fasteners and stained bolt holes.\u003c\/li\u003e\n  \u003cli\u003eUse a lubricant and steady hand to avoid cross-threading.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich applications and parts benefit most from this kit?\u003c\/h3\u003e\n\u003cp\u003eThis set is tailored for automotive maintenance, engine work, machinery repair and general workshop use where threaded holes or bolts have surface damage. It excels on cylinder heads, engine blocks, brackets and body panels where preserving thread size matters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChasing spark plug and head bolt holes on engines.\u003c\/li\u003e\n  \u003cli\u003eCleaning threads on suspension or brake components before reassembly.\u003c\/li\u003e\n  \u003cli\u003eRestoring threads on vintage parts that can’t be replaced easily.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat features make the TOMMARS kit convenient to use?\u003c\/h3\u003e\n\u003cp\u003eThe set is built for practicality: hardened carbon steel construction, hex-shaped taps and dies for use with common tools, and a compact storage case. Color coding speeds up identification across standards and sizes when working under time pressure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable carbon steel for repeated use and longevity.\u003c\/li\u003e\n  \u003cli\u003eHex-shaped tools compatible with wrenches or sockets.\u003c\/li\u003e\n  \u003cli\u003eCompact, labeled case keeps everything sorted and portable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The TOMMARS 49-piece Thread Chaser Set is made for DIY mechanics, professional technicians, restoration hobbyists and workshop owners who need a reliable way to clean and rescue existing threads without enlarging holes. If you service engines, restore vehicles, or maintain industrial equipment and want to preserve original components while ensuring fastener security, this kit offers a practical, color-coded solution for everyday thread repair tasks.\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 these chasers fix stripped threads?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They restore surface-damaged and corroded threads but won’t re-cut severely stripped threads; for large rethreading use a thread insert or larger tap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the taps and dies compatible with standard wrenches?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The hex-shaped taps and dies fit common wrenches or sockets for easy use in most workshops.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TOMMARS","offers":[{"title":"Default Title","offer_id":48080966910110,"sku":"B0BCNXFVC3","price":90.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/tommars-front-packaging.jpg?v=1785793278","url":"https:\/\/northtrailauto.ca\/products\/tommars-thread-chaser-set-49-piece-unc-unf-metric-kit-hardened-carbon-steel-color-coded","provider":"North Trail Auto","version":"1.0","type":"link"}