{"product_id":"heli-coil-5521-24-thread-repair-kit-1-1-2-6-unc","title":"Heli-coil 5521-24 Thread Repair Kit 1-1\/2-6 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELI-COIL 5521-24 is a threaded insert thread repair kit designed to restore stripped or damaged 1-1\/2-6 UNC internal threads to full load-bearing strength. The kit includes a drill, tap, installation tool, tang removal tool, and four helical coil inserts at 2.25 inches in length. It is used across industrial maintenance, heavy equipment, and machinery repair applications where large-diameter fastener threads have been compromised. Machinists, millwrights, and maintenance technicians install this kit as a permanent repair solution without replacing the entire parent component.\u003c\/p\u003e\n\u003cp\u003eThis kit is suited for 1-1\/2-6 UNC thread repair in ferrous and non-ferrous base materials including steel, cast iron, and aluminum. The 2.25-inch insert length accommodates deep-thread engagement requirements common in high-load bolted joints. With all tooling included, the kit supports single-setup repairs in the field or on the shop floor. Four inserts are included, allowing for multiple repair locations per kit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eRepairs 1-1\/2-6 UNC threads with a 2.25-inch helical insert\u003c\/li\u003e\n  \u003cli\u003eComplete kit includes drill, tap, installation tool, and tang removal tool\u003c\/li\u003e\n  \u003cli\u003eFour inserts included per kit for multiple repair sites\u003c\/li\u003e\n  \u003cli\u003eUNC thread standard for compatibility with standard inch-series fasteners\u003c\/li\u003e\n  \u003cli\u003eInstallation tool part number 3724-24, tap part number 8187-24, insert package part number K1185-24\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style thread repair solution for any parent material requiring restoration of 1-1\/2-6 UNC internal threads to standard specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a machinist or qualified maintenance technician. The damaged bore must be drilled to the specified tap drill size before tapping and insert installation. Follow the included tooling sequence: drill, tap, install insert, then remove the tang using the provided tang removal tool. Ensure the workpiece is secured and all rotational equipment is de-energized or de-pressurized before beginning thread repair work.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKit Type\u003c\/strong\u003e: Threaded Insert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thread Size\u003c\/strong\u003e: 1-1\/2-6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 2.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Inserts\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Drill\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Tap\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Installation Tool\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Tang Removal Tool\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Tool Part Number\u003c\/strong\u003e: 3724-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Part Number\u003c\/strong\u003e: 8187-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Package Part Number\u003c\/strong\u003e: K1185-24\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: 5521-24\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELI-COIL","offers":[{"title":"Default Title","offer_id":51994557612338,"sku":"5521-24","price":951.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4218acd40eeb11c8195be6d94940dae0.jpg?v=1789991996","url":"https:\/\/voomisupply.com\/products\/heli-coil-5521-24-thread-repair-kit-1-1-2-6-unc","provider":"Voomi Supply","version":"1.0","type":"link"}