{"product_id":"heli-coil-3371-4-thread-insert-hand-tool-1-4-18-npt","title":"Heli-coil 3371-4 Thread Insert Hand Tool 1\/4-18 Npt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELI-COIL 3371-4 is a hand installation tool designed to drive threaded wire inserts into pre-tapped holes using the 1\/4-18 NPT thread standard. It works with both free-running and locking insert types, making it a versatile option for technicians who need reliable thread repair or thread reinforcement in pipe-threaded applications. The tool engages the tang of the helical insert and winds it into the receiving thread, creating a strong, factory-spec thread form in metal components. It is used by HVAC technicians, plumbers, pipefitters, and industrial maintenance mechanics working on threaded fittings and pipe connections.\u003c\/p\u003e\n\u003cp\u003eThis tool is suited for field and shop use wherever 1\/4-18 NPT thread inserts are being installed. Common applications include repairing stripped pipe threads in manifolds, housings, valve bodies, and equipment panels across residential, commercial, and light industrial systems. The hand-drive design requires no power source, making it practical for tight spaces and service calls where portability matters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eInstalls both free-running and locking helical thread inserts\u003c\/li\u003e\n  \u003cli\u003eDesigned for the 1\/4-18 NPT thread standard\u003c\/li\u003e\n  \u003cli\u003eHand-operated drive tool  -  no power tools required\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard HELI-COIL insert installation procedure\u003c\/li\u003e\n  \u003cli\u003eCompact form factor suited for field service and bench repair work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with free-running and locking helical thread inserts sized to the 1\/4-18 NPT thread standard. Consult HELI-COIL insert specifications to confirm insert series compatibility before use.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread insert installation is typically performed by licensed HVAC technicians, plumbers, or qualified maintenance personnel. Before installing any insert, ensure the receiving component is depressurized, de-energized, and secured. The hole must be properly drilled and tapped to the correct HELI-COIL specification prior to using this tool. Follow the insert manufacturer's installation sequence, including tang break-off procedures where required.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Type\u003c\/strong\u003e: Hand Installation Tool\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: Free-Running and Locking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Thread Size\u003c\/strong\u003e: 1\/4-18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: NPT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HELI-COIL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3371-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":52107049861426,"sku":"3371-4","price":341.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9931eef998961db11823362f0b006709.jpg?v=1790073974","url":"https:\/\/voomisupply.com\/products\/heli-coil-3371-4-thread-insert-hand-tool-1-4-18-npt","provider":"Voomi Supply","version":"1.0","type":"link"}