{"product_id":"e-z-lok-319-428-thread-locking-insert-1-4-28-x-3-8-16-unf","title":"E-z Lok 319-428 Thread Locking Insert 1\/4-28 X 3\/8-16 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe E-Z LOK 319-428 is a self-lock wall thread locking insert designed to create a secure, threaded connection in a host material. It features a 1\/4-28 UNF internal thread with a 2B class of fit and a 3\/8-16 UNF external thread with a 2A class of fit. The insert measures 0.375 inches in overall length and is machined from C12L14 carbon steel with a smooth, rolled finish. It installs using a standard tap, making it compatible with common shop and field tooling. Machinists, maintenance technicians, and assembly professionals use this type of insert to restore or reinforce threaded connections in metal components.\u003c\/p\u003e\u003cp\u003eThis insert is suited for applications where a fine-pitch internal thread must be retained in a coarser or larger-diameter tapped hole. The self-lock wall design resists loosening under vibration and dynamic loading, which makes it appropriate for mechanical assemblies, industrial equipment, and structural fastening applications. The carbon steel construction handles moderate load and wear conditions typical of production and MRO environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 UNF internal thread with 2B class of fit for precise mating\u003c\/li\u003e\n\u003cli\u003e3\/8-16 UNF external thread with 2A class of fit for host material installation\u003c\/li\u003e\n\u003cli\u003eSelf-lock wall design resists loosening under vibration\u003c\/li\u003e\n\u003cli\u003eC12L14 carbon steel construction with smooth, rolled finish\u003c\/li\u003e\n\u003cli\u003e0.375 inches overall length for compact installation envelope\u003c\/li\u003e\n\u003cli\u003eCompatible with standard tap tooling  -  no specialty driver required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard UNF thread locking insert for use in metal host materials tapped to accept a 3\/8-16 external thread, delivering a finished 1\/4-28 internal thread.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by a machinist or maintenance technician using a standard tap to prepare the host material before driving the insert. Ensure the host material is properly fixtured and that the tapped hole meets the required thread tolerance before installation. Degrease the installation area to promote proper seating and locking performance. Follow applicable fastener torque guidelines from the assembly specification  -  do not exceed the load rating of the host material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Thread Size\u003c\/strong\u003e: 1\/4-28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Thread Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.375 inches\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\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\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: 0.0086 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 319-428\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"E-Z LOK","offers":[{"title":"Default Title","offer_id":67906161836338,"sku":"319-428","price":26.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c201de71d7e1ebfc87de30c6cbeaf3a9_e3ceb7dd-f889-4e6f-879a-8a5b004cb93e.jpg?v=1791165479","url":"https:\/\/voomisupply.com\/products\/e-z-lok-319-428-thread-locking-insert-1-4-28-x-3-8-16-unf","provider":"Voomi Supply","version":"1.0","type":"link"}