{"product_id":"value-collection-sli80310-100bx-hex-lock-nut-5-16-18-grade-c","title":"Value Collection SLI80310-100BX Hex Lock Nut 5\/16-18 Grade C","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SLI80310-100BX is a 5\/16-18 hex lock nut with a metal insert, manufactured from Grade C steel. The metal insert provides prevailing-torque locking action, resisting loosening caused by vibration, shock, and thermal cycling. This style of lock nut is a standard fastener in mechanical assemblies across HVAC equipment, plumbing rough-in, electrical enclosures, and general trade applications. Sold in a box of 100, these nuts conform to ANSI B 18.16.3M, DIN 985, and ISO 7040 standards, making them appropriate for controlled mechanical assemblies where documented fastener standards are required.\u003c\/p\u003e\n\u003cp\u003eThis hex lock nut is suited for 5\/16-18 UNC threaded applications in both residential and light commercial settings. Common installation scenarios include securing brackets, panels, fan assemblies, and mechanical components where vibration-resistant fastening is critical. The 5\/16-18 UNC thread form is one of the most widely used inch-series thread sizes in trade work, fitting standard bolts and studs found throughout HVAC equipment frames, electrical panel supports, and pipe hanger hardware.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal insert provides positive prevailing-torque locking without damaging mating threads\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC thread form — standard inch-series coarse thread\u003c\/li\u003e\n  \u003cli\u003eGrade C steel construction for reliable strength in general mechanical applications\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI B 18.16.3M, DIN 985, and ISO 7040 standards\u003c\/li\u003e\n  \u003cli\u003eSold in a box of 100 for job-site and shop inventory use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with any standard 5\/16-18 UNC threaded bolt or stud in inch-measurement mechanical assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall using an appropriately sized hex wrench or socket. Tighten to the torque specification required by the assembly design or applicable code — do not estimate. Metal-insert prevailing-torque nuts are generally considered single-use; inspect for deformation before reusing. Follow applicable mechanical and trade codes for the specific installation type.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNut Type\u003c\/strong\u003e: Hex Lock Nut with Metal Insert\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: UNC (Unified National Coarse)\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: Grade C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI B 18.16.3M, DIN 985, ISO 7040\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 100 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: SLI80310-100BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51712628687154,"sku":"SLI80310-100BX","price":2468.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2df15b54b7a74cf7a0263a7155fd943e.jpg?v=1788487100","url":"https:\/\/voomisupply.com\/products\/value-collection-sli80310-100bx-hex-lock-nut-5-16-18-grade-c","provider":"Voomi Supply","version":"1.0","type":"link"}