{"product_id":"heli-coil-535-9-thread-insert-hand-installation-tool-9-16-18-unf","title":"Heli-coil 535-9 Thread Insert Hand Installation Tool 9\/16-18 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELI-COIL 535-9 is a hand installation tool designed for installing wire thread inserts into 9\/16-18 UNF tapped holes. It uses a Type IV Non-Captive Prewinder mechanism that pre-winds the insert onto the mandrel before driving it into the parent material. The prewinder style eliminates the need to manually start the insert, reducing installation time and the risk of cross-threading. With a spinner diameter of 1.125 inches and a prewinder length of 2.875 inches, this tool is sized for controlled, single-handed operation. It is used by machinists, field maintenance techs, and assembly technicians across industrial, automotive, and general mechanical applications.\u003c\/p\u003e\n\u003cp\u003eThis tool is suited for repair and production use wherever 9\/16-18 UNF thread inserts must be installed by hand. Typical applications include restoring stripped threads in aluminum, cast iron, and steel components. The tool accommodates both free-running and locking insert types, making it a single tool for multiple insert variants at this thread size. It is well suited for field repair work where a torque driver or power installation tool is not available or practical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eType IV Non-Captive Prewinder pre-winds insert onto mandrel before installation, reducing cross-threading risk\u003c\/li\u003e\n  \u003cli\u003eCompatible with both free-running and locking wire thread inserts at 9\/16-18\u003c\/li\u003e\n  \u003cli\u003eSpinner diameter of 1.125 inches provides grip surface for manual torque input\u003c\/li\u003e\n  \u003cli\u003ePrewinder length of 2.875 inches allows access in moderately recessed bores\u003c\/li\u003e\n  \u003cli\u003eDesigned for UNF thread standard inserts only at this thread size\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with free-running and locking wire thread inserts in 9\/16-18 UNF thread size. Compatible insert types and specific insert part numbers should be verified against HELI-COIL insert product lines for the 9\/16-18 UNF specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by hand and does not require power tools or torque equipment. Before installing any thread insert, ensure the tapped hole meets the correct oversize drill and tap specifications for the insert being used. Always verify the parent material thread has been properly prepared and deburred before driving the insert. This tool is for hand use only and should not be adapted to power drivers without confirmation from the manufacturer.\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, Prewinder\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrewinder Classification\u003c\/strong\u003e: Type IV Non-Captive Prewinder\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16-18\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  \u003cli\u003e\n\u003cstrong\u003eSpinner Diameter\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrewinder Length\u003c\/strong\u003e: 2.875 inches\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: 535-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":52045589152050,"sku":"535-9","price":418.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3e9940c262411c6bc95b2f3c168396b4.jpg?v=1790030605","url":"https:\/\/voomisupply.com\/products\/heli-coil-535-9-thread-insert-hand-installation-tool-9-16-18-unf","provider":"Voomi Supply","version":"1.0","type":"link"}