{"product_id":"heli-coil-7552-03-thread-insert-installation-tool-3-56-unf","title":"Heli-coil 7552-03 Thread Insert Installation Tool 3-56 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELI-COIL 7552-03 is a hand installation tool designed for inserting helical thread inserts into pre-tapped holes. It accepts size 3-56 UNF thread inserts and uses a Prewinder Type II mechanism that coils the insert tang inward before driving it into the receiving thread. This tool is compatible with both free-running and locking insert styles. Maintenance technicians, machinists, and assembly professionals use this tool when installing or repairing threads in metal, plastic, or composite components where a durable threaded interface is required.\u003c\/p\u003e\u003cp\u003eThis tool is used in hand-installation applications where power tooling is not practical or permitted. The Prewinder Type II design is suited for production and repair environments that require consistent, controlled insert seating at the 3-56 UNF thread size. Typical applications include small fastener thread repair in precision assemblies, electronics housings, and light mechanical components. It is used by machinists, field service technicians, and assembly line operators working with small-diameter UNF threaded inserts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrewinder Type II mechanism for controlled, consistent insert installation\u003c\/li\u003e\n\u003cli\u003eSized for 3-56 UNF minimum thread inserts\u003c\/li\u003e\n\u003cli\u003eCompatible with both free-running and locking helical thread insert styles\u003c\/li\u003e\n\u003cli\u003eHand-operated design for use where power tools are not suitable\u003c\/li\u003e\n\u003cli\u003eCompact tool suited for small-diameter precision thread repair work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with free-running and locking helical thread inserts at the 3-56 UNF thread size. Confirm insert manufacturer specifications before use to ensure proper tool-to-insert fitment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tool is used by machinists and assembly technicians performing thread insert installation or repair. Ensure the receiving hole has been tapped to the correct specification for the insert size before driving the insert. Follow the insert manufacturer guidelines for proper mandrel engagement and tang break-off procedure after seating. Do not use excessive force during installation, as this may damage the insert or the parent material threads.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Type\u003c\/strong\u003e: Hand Installation Tool\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrewinder Type\u003c\/strong\u003e: Type II Prewinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Thread Size\u003c\/strong\u003e: 3-56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: Free-Running and Locking\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 7552-03\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":51967015911730,"sku":"7552-03","price":222.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e61de9095e20a21a064859b65a78c5e9.jpg?v=1789950743","url":"https:\/\/voomisupply.com\/products\/heli-coil-7552-03-thread-insert-installation-tool-3-56-unf","provider":"Voomi Supply","version":"1.0","type":"link"}