{"product_id":"value-collection-b52001628-hex-lock-nut-5-8-18-grade-8","title":"Value Collection B52001628 Hex Lock Nut 5\/8-18 Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION B52001628 is a 5\/8-18 hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a zinc yellow dichromate finish. The nylon insert creates prevailing torque by compressing against the mating thread, resisting loosening from vibration and dynamic loads without requiring secondary locking hardware. At 3\/4 inches high and 15\/16 inches across the flats, this nut follows UNF (Unified National Fine) thread standards and is sized for standard hex tooling. The zinc yellow dichromate coating provides corrosion resistance in moderate-exposure environments. Installers in automotive, heavy equipment, structural, and industrial maintenance applications rely on Grade 8 nylon insert lock nuts where high clamp load and vibration resistance are required.\u003c\/p\u003e\u003cp\u003eThis lock nut is suited for right-hand threaded fastener assemblies calling for a 5\/8-18 UNF specification. Typical applications include suspension components, hydraulic fittings, frame assemblies, and general mechanical assemblies subject to vibration or cyclic loading. The Grade 8 material rating makes it appropriate for high-stress connections where a lower-grade fastener would be insufficient. It is sold individually with a minimum order quantity of 5 units.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNylon insert locking style provides prevailing torque without secondary hardware\u003c\/li\u003e\n\u003cli\u003eGrade 8 steel construction supports high-clamp-load applications\u003c\/li\u003e\n\u003cli\u003e5\/8-18 UNF right-hand thread for fine-thread fastener assemblies\u003c\/li\u003e\n\u003cli\u003eZinc yellow dichromate finish for corrosion resistance in moderate environments\u003c\/li\u003e\n\u003cli\u003e3\/4 inch height and 15\/16 inch width across flats for standard hex tooling\u003c\/li\u003e\n\u003cli\u003eConforms to inch-measurement UNF fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 5\/8-18 UNF right-hand threaded bolts and studs in inch-measurement fastener assemblies requiring a prevailing-torque hex lock nut.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed with a standard 15\/16 inch hex wrench or socket. Nylon insert lock nuts are generally intended for single use — once the nylon has been compressed by a mating thread, the prevailing torque value is reduced and reuse is not recommended for critical joints. Torque to the fastener assembly specification for the application; do not rely on feel alone. Ensure the mating bolt thread condition is clean and undamaged before installation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: UNF (Inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Style\u003c\/strong\u003e: Nylon Insert\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 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Yellow Dichromate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 15\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.083 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: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: B52001628\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51718584238386,"sku":"B52001628","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a563a5f1159cf14094cc2138efec2034.jpg?v=1788554409","url":"https:\/\/voomisupply.com\/products\/value-collection-b52001628-hex-lock-nut-5-8-18-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}