{"product_id":"navac-ntf66-hvac-flaring-tool-45-eccentric-cone-internal-clutch-1-4-3-4","title":"NAVAC NTF66 HVAC Flaring Tool — 45° Eccentric Cone, Internal Clutch, 1\/4–3\/4\"","description":"\u003cp\u003e\u003cstrong\u003eThe NAVAC NTF66 is a heavy-duty HVAC flaring tool that creates consistent 45° flares on copper tubing while protecting the tool and fittings with an internal clutch and durable nitride finish.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for HVAC technicians and service professionals, the NTF66 combines precision engineering with long-lasting materials. It uses an eccentric cone for accurate 45-degree flares across common tubing sizes, an axial spacing design and patented rivet connection for repeatable results, and an internal clutch to reduce the risk of over-torquing. NAVAC backs the tool with a one-year warranty to support reliability on the job.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the NTF66 prevent over-torquing and tool damage?\u003c\/h3\u003e\n\u003cp\u003eThe NTF66 integrates a built-in internal clutch that disengages when torque exceeds the preset threshold, protecting both the flaring mechanism and the copper tubing. This feature reduces operator guesswork and helps avoid ruined fittings or stripped threads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInternal clutch system limits excess torque\u003c\/li\u003e\n  \u003cli\u003eProtects flaring cone and tubing from mechanical stress\u003c\/li\u003e\n  \u003cli\u003eImproves repeatability by preventing inconsistent force\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich tubing sizes and flare angle does it support?\u003c\/h3\u003e\n\u003cp\u003eDesigned for common refrigeration and HVAC copper tubing, the NTF66 handles outside diameters from 1\/4\" up to 3\/4\". The eccentric cone forms a standardized 45-degree flare, compatible with most flare fittings and assemblies used in service work.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible sizes: 1\/4\", 5\/16\", 3\/8\", 1\/2\", 5\/8\", 3\/4\"\u003c\/li\u003e\n  \u003cli\u003eEccentric cone produces precise 45° flares\u003c\/li\u003e\n  \u003cli\u003eWorks for refrigeration and HVAC flare fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat design features ensure consistent, leak-proof flares?\u003c\/h3\u003e\n\u003cp\u003eAxial spacing and a patented rivet connection keep the cone and clamp aligned during flaring, which reduces wobble and keeps the flare geometry uniform. A nitride-treated finish adds surface hardness and corrosion resistance for stable performance over many cycles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAxial spacing maintains accurate alignment during forming\u003c\/li\u003e\n  \u003cli\u003ePatented rivet connection secures components for repeatability\u003c\/li\u003e\n  \u003cli\u003eNitride treatment improves durability and wear resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat support and warranty does NAVAC provide?\u003c\/h3\u003e\n\u003cp\u003eNAVAC includes a one-year warranty to cover manufacturing defects and give technicians confidence in daily use. The warranty complements the tool's build quality, helping shops manage tool upkeep and replacement planning.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne-year limited warranty from NAVAC\u003c\/li\u003e\n  \u003cli\u003eDurable construction intended for frequent field use\u003c\/li\u003e\n  \u003cli\u003eDesigned to reduce downtime with consistent results\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The NAVAC NTF66 is tailored to HVAC and refrigeration technicians, service contractors, and dedicated DIYers who need a reliable, portable flaring tool for field repairs and system installations. It’s best for users who value repeatable 45° flares across a wide range of copper tube sizes, require a tool that resists wear, and appreciate built-in torque protection to safeguard fittings and minimize rework.\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: Does the NTF66 make 45° flares on all common copper tubing sizes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The NTF66 forms 45° flares for 1\/4\", 5\/16\", 3\/8\", 1\/2\", 5\/8\" and 3\/4\" O.D. copper tubing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What does the built-in clutch do?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The internal clutch limits torque to prevent over-tightening, protecting the tool and fittings from damage.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NAVAC","offers":[{"title":"Default Title","offer_id":48082853691550,"sku":"B07L76P4MN","price":165.5,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/navac-ntf66-front-profile.jpg?v=1785816464","url":"https:\/\/northtrailauto.ca\/products\/navac-ntf66-hvac-flaring-tool-45-eccentric-cone-internal-clutch-1-4-3-4","provider":"North Trail Auto","version":"1.0","type":"link"}