{"product_id":"value-collection-99801-hex-nut-5-8-18-grade-8-steel","title":"Value Collection 99801 Hex Nut 5\/8-18 Grade 8 Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 99801 is a 5\/8-18 UNF hex nut manufactured from Grade 8 steel with a black oxide finish. Grade 8 steel provides high tensile strength suited for demanding fastening applications where standard hardware-grade nuts would be inadequate. The black oxide finish offers mild corrosion resistance and reduces light reflection. At 15\/16 inches across the flats and 35\/64 inches in height, this nut meets standard dimensional tolerances for 5\/8-18 fine-thread fastener assemblies. It is a right-hand thread design, meaning it tightens clockwise. Maintenance technicians, millwrights, and general tradespeople working with high-strength fastener assemblies will find this nut appropriate for structural and mechanical connections.\u003c\/p\u003e\u003cp\u003eThis hex nut is used in mechanical assemblies requiring fine-thread engagement with a 5\/8-18 UNF bolt or stud. Fine-thread fasteners like these are common in automotive, equipment manufacturing, and industrial maintenance applications where vibration resistance and precise torque control are priorities. The Grade 8 rating makes this nut suitable for high-load connections in both original equipment and field repair scenarios. It is not rated to military specifications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGrade 8 steel construction for high tensile strength in demanding assemblies\u003c\/li\u003e\n\u003cli\u003e5\/8-18 UNF right-hand thread for fine-thread fastener compatibility\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish provides mild corrosion resistance and low-glare surface\u003c\/li\u003e\n\u003cli\u003e15\/16 inches across the flats for use with standard hex wrench and socket tooling\u003c\/li\u003e\n\u003cli\u003e35\/64 inches in height for standard hex nut profile\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard replacement or new-installation hex nut for 5\/8-18 UNF threaded bolts and studs in mechanical and industrial assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a standard 15\/16-inch hex socket or open-end wrench. Ensure mating bolt or stud thread specification matches 5\/8-18 UNF before assembly. Apply appropriate torque per the fastener assembly specification for the application — do not over-torque, as this can yield the fastener or damage mating threads. Inspect threads on both nut and bolt for damage or contamination 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 Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\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: 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Across Flats\u003c\/strong\u003e: 15\/16 inches (0.9375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 35\/64 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0005 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilitary Specification\u003c\/strong\u003e: Does Not Meet Military Specifications\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: 99801\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693376536882,"sku":"99801","price":77.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/472e79ade4b5e095e897a09f199d2873.jpg?v=1788311428","url":"https:\/\/voomisupply.com\/products\/value-collection-99801-hex-nut-5-8-18-grade-8-steel","provider":"Voomi Supply","version":"1.0","type":"link"}