{"product_id":"value-collection-111331pr-set-screw-5-16-18-x-7-8-in-grade-8","title":"Value Collection 111331PR Set Screw 5\/16-18 X 7\/8 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 111331PR is a 5\/16-18 x 7\/8-inch knurled cup point set screw manufactured from Grade 8 alloy steel. Set screws are fully threaded fasteners with no head, designed to secure a component — such as a collar, gear, or pulley — against or onto a shaft by applying direct clamping force through their point. The knurled cup point bites into the mating surface for a positive, slip-resistant grip. Drive is a 5\/32-inch hex (Allen) socket. This screw is built to ASME\/ANSI B18.3 and ASTM F912 standards, making it suitable for high-load, vibration-prone assemblies in mechanical and industrial applications.\u003c\/p\u003e\n\u003cp\u003eThis set screw is used wherever a flush or recessed fastener is required to lock rotating or sliding components in place on a shaft. Typical applications include motor shaft collars, sprocket hubs, coupling assemblies, and valve stems in HVAC equipment, industrial machinery, and general mechanical installations. The UNC thread form and Grade 8 alloy steel construction make it appropriate for high-torque, heavy-duty service where standard steel fasteners would be insufficient. Installation requires a 5\/32-inch hex key.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eKnurled cup point provides positive grip and resists loosening under vibration\u003c\/li\u003e\n  \u003cli\u003eGrade 8 alloy steel for high tensile strength in demanding mechanical applications\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC thread for compatibility with standard unified coarse thread assemblies\u003c\/li\u003e\n  \u003cli\u003e5\/32-inch hex drive accepts standard Allen or hex key tools\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM F912 dimensional and material standards\u003c\/li\u003e\n  \u003cli\u003eHeadless design allows flush or sub-flush installation in threaded bores\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard UNC set screw for use in any threaded bore sized for 5\/16-18 thread, including shaft collars, hubs, couplings, and similar mechanical components requiring a knurled cup point fastener.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSet screws are installed and removed by a qualified mechanic or technician using a 5\/32-inch hex key. De-energize and lock out all equipment before servicing any assembly that contains this fastener. Do not exceed the rated torque range for Grade 8 fasteners of this thread size as published in applicable mechanical standards. Ensure the threaded bore is clean and free of debris before installation to avoid cross-threading.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 7\/8 inches (overall)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Knurled Cup\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Key Size\u003c\/strong\u003e: 5\/32 inches (0.1563 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM F912\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Type\u003c\/strong\u003e: Fractional Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.014 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161505\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: 111331PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51715624108338,"sku":"111331PR","price":7018.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed28e1bbb1c5f123bda325ba39e90bf8_f43d7138-ab0a-4498-9933-6d45375a1608.jpg?v=1788516494","url":"https:\/\/voomisupply.com\/products\/value-collection-111331pr-set-screw-5-16-18-x-7-8-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}