{"product_id":"heli-coil-a3591-3cnpf285-10-32-unf-locking-insert","title":"Heli-coil A3591-3CNPF285 10-32 Unf Locking Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELI-COIL A3591-3CNPF285 is a tangless screw-locking helical coil insert designed to create strong, vibration-resistant threads in parent material. It installs without a tang-break step, eliminating the risk of tang fragments in blind holes or precision assemblies. Sized for 10-32 UNF threads with a 1-1\/2D length-to-diameter ratio and an overall length of 0.285 inches, this insert is manufactured from Grade 304 stainless steel with a primer-free finish. It delivers a maximum locking torque of 13 inch-pounds and a minimum break-away torque of 2.00 ounce-inches. Machinists, maintenance technicians, and assembly professionals install this type of insert to restore or reinforce threaded holes in metal components.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for applications requiring reliable thread locking in stainless-compatible assemblies, including aerospace, industrial machinery, electronics enclosures, and precision mechanical assemblies. The tangless design makes it well-suited for automated installation as well as manual installation in confined spaces or blind holes where tang removal would be difficult. The 304 stainless steel construction provides corrosion resistance in wet or chemically exposed environments. Sold individually; a minimum order quantity of 10 units applies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTangless design eliminates tang-break step and prevents fragment contamination in blind holes\u003c\/li\u003e\n  \u003cli\u003eGrade 304 stainless steel construction for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e10-32 UNF thread standard, 1-1\/2D length-to-diameter ratio\u003c\/li\u003e\n  \u003cli\u003eMaximum locking torque of 13 inch-pounds for vibration-resistant thread retention\u003c\/li\u003e\n  \u003cli\u003eMinimum outside diameter of 0.236 inches, maximum outside diameter of 0.256 inches\u003c\/li\u003e\n  \u003cli\u003ePrimer-free finish for clean installation without surface prep requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a replacement or new-installation locking insert for any application requiring a 10-32 UNF helical coil thread insert with a 1-1\/2D engagement length.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a properly sized Heli-Coil tap to prepare the parent hole before insert placement. Use the appropriate tangless installation tool to drive the insert to the correct depth without overtightening. Always ensure the parent material is securely fixtured and power is removed from any assembly before reworking threaded holes in electrical or mechanical equipment. Follow the fastener manufacturer torque specifications for the mating screw to avoid overloading the insert after installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 10-32 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Insert Length\u003c\/strong\u003e: 0.285 inches\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\u003eMinimum Outside Diameter\u003c\/strong\u003e: 0.236 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Outside Diameter\u003c\/strong\u003e: 0.256 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Free Coils\u003c\/strong\u003e: 6-7\/8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Locking Torque\u003c\/strong\u003e: 13 inch-pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Break-Away Torque\u003c\/strong\u003e: 2.00 ounce-inches\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\u003eCoating\/Finish\u003c\/strong\u003e: Primer Free\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTang\u003c\/strong\u003e: Tangless\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.00082 pounds\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: A3591-3CNPF285\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":52091377746226,"sku":"A3591-3CNPF285","price":26.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ef31b91f8201e3adcaca4c97fd2ea02b.jpg?v=1790063075","url":"https:\/\/voomisupply.com\/products\/heli-coil-a3591-3cnpf285-10-32-unf-locking-insert","provider":"Voomi Supply","version":"1.0","type":"link"}