{"product_id":"e-z-lok-329-14-thread-locking-insert-7-8-9-unc","title":"E-z Lok 329-14 Thread Locking Insert 7\/8-9 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe E-Z LOK 329-14 is a self-lock wall thread locking insert designed to create a strong, vibration-resistant threaded connection in parent material that requires a larger external thread to anchor it securely. Machined from C12L14 carbon steel with a smooth, rolled finish, this insert features a 7\/8-9 UNC internal thread and a 1-1\/4-7 UNC external thread. The overall length is 1.125 inches. It is installed by trade professionals and maintenance technicians working with bolted assemblies where thread retention and resistance to loosening under load are critical requirements.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for use in metalworking, industrial maintenance, and mechanical assembly applications where a stripped or undersized threaded hole must be restored or reinforced to accept a 7\/8-9 fastener. The self-lock wall design mechanically grips the parent material during installation, resisting pullout and rotation. It is compatible with standard UNC tapping procedures using a standard tap type, making it a practical solution for repair and new fabrication work across a range of industries.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/8-9 UNC internal thread with Class 2B fit for standard fastener compatibility\u003c\/li\u003e\n  \u003cli\u003e1-1\/4-7 UNC external thread with Class 2A fit for secure engagement in parent material\u003c\/li\u003e\n  \u003cli\u003eSelf-lock wall design resists rotation and pullout under vibration and load\u003c\/li\u003e\n  \u003cli\u003eC12L14 carbon steel construction for durability in demanding mechanical environments\u003c\/li\u003e\n  \u003cli\u003eSmooth, rolled finish  -  installed using a standard tap, no special tooling required\u003c\/li\u003e\n  \u003cli\u003eOverall length of 1.125 inches provides solid thread engagement depth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style thread repair and reinforcement insert for use in parent materials tapped to accept a 1-1\/4-7 UNC external thread, compatible with standard UNC fastener systems requiring a 7\/8-9 internal thread.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists, maintenance technicians, or mechanical tradespeople. The parent material must be tapped to the correct 1-1\/4-7 UNC specification using a standard tap before the insert is driven in. Ensure the workpiece is secured and the bore is clean and free of debris before installation. Follow the insert manufacturer's installation procedure and use appropriate thread-locking or retention methods if required by the application.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Thread Size\u003c\/strong\u003e: 7\/8-9\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Thread Size\u003c\/strong\u003e: 1-1\/4-7\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: 1.125 inches\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\u003eInsert Type\u003c\/strong\u003e: Self-Lock Wall\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: C12L14\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Smooth, Rolled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFor Tap Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.055 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: E-Z LOK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 329-14\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"E-Z LOK","offers":[{"title":"Default Title","offer_id":67910667206962,"sku":"329-14","price":31.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1868fe2a9b711f3e268f4252e9e3a6e9.jpg?v=1791199516","url":"https:\/\/voomisupply.com\/products\/e-z-lok-329-14-thread-locking-insert-7-8-9-unc","provider":"Voomi Supply","version":"1.0","type":"link"}