{"product_id":"jergens-215-066106-keylocking-thread-insert-1-2-20-unf","title":"Jergens 215-066106 Keylocking Thread Insert 1\/2-20 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe JERGENS 215-066106 is a heavy-duty keylocking thread locking insert designed to create a permanent, load-bearing internal thread in parent materials that require a reliable threaded anchor. Manufactured from C1215 carbon steel with a zinc phosphate coating, this insert features a 1\/2-20 UNF internal thread and a 3\/4-16 UNF external thread. The overall length is 5\/8 inches (0.620 inches decimal). It meets NAS 1394 standards and is built for high-stress fastening applications where thread pullout resistance is critical. Licensed machinists, maintenance technicians, and assembly professionals install this type of insert.\u003c\/p\u003e\u003cp\u003eThis insert is suited for use in metalworking, industrial assembly, and maintenance-repair-overhaul (MRO) applications where a strong, vibration-resistant threaded connection is needed in a pre-bored hole. The external 3\/4-16 thread engages the parent material bore, while the internal 1\/2-20 thread accepts the mating fastener. Applications include aerospace ground support equipment, tooling fixtures, and heavy industrial assemblies where NAS 1394 compliance is specified. The zinc phosphate finish provides baseline corrosion resistance for indoor and controlled-environment use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHeavy-duty keylocking design resists rotation and pullout under high axial and torque loads\u003c\/li\u003e\n\u003cli\u003e1\/2-20 UNF internal thread with Class 2B fit for standard fastener engagement\u003c\/li\u003e\n\u003cli\u003e3\/4-16 UNF external thread with Class 2A fit for precise bore installation\u003c\/li\u003e\n\u003cli\u003eC1215 carbon steel construction meets NAS 1394 standard\u003c\/li\u003e\n\u003cli\u003eZinc phosphate coating provides corrosion resistance in controlled environments\u003c\/li\u003e\n\u003cli\u003e5\/8-inch overall length suits compact installation envelopes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-installation keylocking insert for parent material bores tapped to 3\/4-16 UNF, accepting 1\/2-20 UNF fasteners. Conforms to NAS 1394 for applications requiring that standard.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of keylocking thread inserts requires a properly sized and tapped parent bore at 3\/4-16 UNF prior to insert installation. Use the appropriate keylocking insert installation tool to drive and lock the keys into the parent material. Ensure the parent material is secured and the work area is clear of cutting fluids that could affect key locking. Follow shop safety procedures and applicable fastener installation standards for the assembly being serviced.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Thread Size\u003c\/strong\u003e: 1\/2-20 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Thread Size\u003c\/strong\u003e: 3\/4-16 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Type\u003c\/strong\u003e: Heavy-Duty Keylocking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5\/8 inches (0.620 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Thread Class of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Thread Class of Fit\u003c\/strong\u003e: 2A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C1215\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Zinc Phosphate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NAS 1394\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0625 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: JERGENS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 215-066106\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JERGENS","offers":[{"title":"Default Title","offer_id":51964808921394,"sku":"215-066106","price":93.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/063d9b9298cd94563d8cc538ffbba41b.jpg?v=1789949333","url":"https:\/\/voomisupply.com\/products\/jergens-215-066106-keylocking-thread-insert-1-2-20-unf","provider":"Voomi Supply","version":"1.0","type":"link"}