{"product_id":"heli-coil-1185-5cn469s-free-running-insert-5-16-18-500-pack","title":"Heli-coil 1185-5CN469S Free Running Insert 5\/16-18 500 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELI-COIL 1185-5CN469S is a free running helical wire thread insert designed to create strong, wear-resistant internal threads in parent materials that are too soft, damaged, or otherwise unsuitable for direct tapping. Manufactured from 304 stainless steel, this tanged insert measures 0.469 inches overall length and accepts a 5\/16-18 UNC thread. The coil design distributes load evenly across multiple thread convolutions, significantly increasing pull-out strength and extending service life in high-cycle or high-vibration applications. Licensed HVAC technicians, plumbers, machinists, and maintenance professionals routinely use these inserts to restore stripped threads or build in stainless-grade thread strength during original fabrication.\u003c\/p\u003e\u003cp\u003eThis insert is suited for residential and commercial maintenance, OEM assembly, and field repair work wherever a 5\/16-18 UNC threaded hole requires reinforcement or restoration. The 1-1\/2D length-to-diameter ratio makes it a standard choice for general-purpose fastening applications across equipment housings, compressor brackets, access panels, pump bodies, and other threaded connections requiring a durable, corrosion-resistant insert. Each package contains 500 inserts, supporting high-volume production or stocking requirements for service fleets and shop inventories.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e304 stainless steel construction provides corrosion resistance in wet or chemically exposed environments\u003c\/li\u003e\n\u003cli\u003e5\/16-18 UNC thread size with 0.469 inches overall length suits a wide range of general-purpose fastening applications\u003c\/li\u003e\n\u003cli\u003eTanged design allows installation and tang break-off using standard HELI-COIL installation tooling\u003c\/li\u003e\n\u003cli\u003e6-5\/8 free coils and 1-1\/2D length-to-diameter ratio deliver balanced load distribution and pull-out resistance\u003c\/li\u003e\n\u003cli\u003e500-insert pack quantity supports production runs, fleet service trucks, and shop stock programs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in any parent material tapped to accept a 5\/16-18 UNC free running helical insert; requires the appropriate HELI-COIL STI tap and installation tool for this thread size and insert length.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by a machinist, maintenance technician, or qualified trade professional using an STI tap to prepare the parent hole, followed by a dedicated installation tool to drive the insert to the correct depth. Power down or de-energize any equipment before performing thread repair on live assemblies. Break off the tang after installation using a tang break-off tool or long-nose pliers; never leave the tang in a blind hole. Follow the insert manufacturer tooling charts for correct tap drill size and tap engagement depth to avoid oversizing the parent bore.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Insert Length\u003c\/strong\u003e: 0.469 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTang Type\u003c\/strong\u003e: Tanged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 304\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Free Coils\u003c\/strong\u003e: 6-5\/8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength to Diameter Ratio\u003c\/strong\u003e: 1-1\/2D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 500 inserts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23291804\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: 1185-5CN469S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":52053829091634,"sku":"1185-5CN469S","price":500.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d8275725bb674aff6c52e1a5d714ad78_46da9074-a842-40a9-ab89-149893030d48.jpg?v=1790036427","url":"https:\/\/voomisupply.com\/products\/heli-coil-1185-5cn469s-free-running-insert-5-16-18-500-pack","provider":"Voomi Supply","version":"1.0","type":"link"}