{"product_id":"value-collection-b52001662-heavy-hex-lock-nut-7-8-9","title":"Value Collection B52001662 Heavy Hex Lock Nut 7\/8-9","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION B52001662 is a heavy hex lock nut with a nylon insert, designed for high-vibration fastening applications where standard nuts tend to loosen over time. Threaded at 7\/8-9 UNC with a right-hand thread direction, it is manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance. The nylon insert deforms against the bolt threads to create a prevailing-torque locking action without the need for additional locking hardware. At 1-1\/8 inches in height with 1-7\/16 inch width across flats, this is a heavy hex profile suitable for higher-load structural and mechanical assemblies. Machinists, millwrights, and maintenance technicians are the typical installers.\u003c\/p\u003e\n\u003cp\u003eThis nut is used wherever a reliable vibration-resistant fastener is required in inch-standard mechanical assemblies. Common applications include general industrial machinery, structural steel connections, agricultural equipment, and heavy equipment maintenance. The zinc plating provides light-duty corrosion protection suitable for indoor or sheltered environments. The UNC thread form makes it compatible with standard 7\/8-9 bolts and threaded rod used across industrial and construction trades.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNylon insert locking style provides prevailing-torque resistance without additional hardware\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction suitable for general-purpose structural and mechanical use\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish for basic corrosion protection in sheltered environments\u003c\/li\u003e\n  \u003cli\u003eHeavy hex profile offers greater wrench engagement area compared to standard hex\u003c\/li\u003e\n  \u003cli\u003e7\/8-9 UNC right-hand thread conforms to inch-standard fastener practice\u003c\/li\u003e\n  \u003cli\u003eWidth across points of 1.589 inches ensures compatibility with heavy hex tooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 7\/8-9 UNC threaded fasteners including bolts and threaded rod conforming to inch-standard UNC specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by hand-threading the nut onto a 7\/8-9 UNC bolt or threaded rod until the nylon insert engages, then torquing with an appropriate heavy hex wrench or impact tool. Ensure mating fasteners are free of debris, damage, or lubricant that could affect the prevailing-torque locking function. Nylon insert lock nuts are generally considered single-use; reuse after removal is not recommended in critical applications. Follow applicable mechanical or structural fastening standards for torque requirements based on joint design and load.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNut Type\u003c\/strong\u003e: Heavy Hex Lock Nut\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/8-9\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocking Style\u003c\/strong\u003e: Nylon Insert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Nylon\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 1-1\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 1-7\/16 inches (1.417 to 1.444 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Across Points\u003c\/strong\u003e: 1.589 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.34 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: B52001662\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51690888626482,"sku":"B52001662","price":15.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/882aa9333292cada1ff86478ca4a1c7c.jpg?v=1788277065","url":"https:\/\/voomisupply.com\/products\/value-collection-b52001662-heavy-hex-lock-nut-7-8-9","provider":"Voomi Supply","version":"1.0","type":"link"}