{"product_id":"value-collection-111321pr-set-screw-5-16-18-x-3-8-in-grade-8","title":"Value Collection 111321PR Set Screw 5\/16-18 X 3\/8 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 111321PR is a 5\/16-18 x 3\/8 inch knurled cup point set screw machined from Grade 8 alloy steel. Set screws of this type are fully threaded, headless fasteners used to secure a component — such as a pulley, gear, or collar — onto a shaft by applying clamping force through the point. The knurled cup point bites into the mating surface to resist rotation and axial movement. Drive is a 5\/32 inch hex key socket. This fastener meets ASME\/ANSI B18.3 and ASTM F912 standards, making it suitable for precision mechanical assemblies where torque retention and positive locking are required.\u003c\/p\u003e\n\u003cp\u003eThis set screw is appropriate for use in light industrial, HVAC, and mechanical equipment applications where shaft-to-hub connections must be secured reliably. Common installations include motor shaft collars, fan blade hubs, and drive pulleys in blower assemblies. The UNC thread form (5\/16-18) is standard in North American mechanical systems. This fastener is sold individually with a minimum order quantity of 100 pieces, making it suitable for service shops and contractors stocking fasteners for field repairs or equipment assembly.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eKnurled cup point provides positive grip and resists back-out under vibration\u003c\/li\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile and torsional strength\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC thread for compatibility with standard North American tapped holes\u003c\/li\u003e\n  \u003cli\u003e5\/32 inch hex drive accepts standard hex keys and Allen drivers\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM F912 dimensional and material standards\u003c\/li\u003e\n  \u003cli\u003eHeadless design sits flush or below the surface to eliminate snag hazards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in any application requiring a 5\/16-18 UNC threaded set screw with a knurled cup point and 5\/32 inch hex drive, including shaft collars, pulleys, and mechanical couplings in HVAC blower assemblies and light industrial equipment.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by mechanical technicians using a 5\/32 inch hex key or Allen driver. Always ensure the tapped hole is clean and free of debris before threading the fastener. De-energize and lock out any rotating equipment before servicing shaft-mounted components. Do not exceed the rated torque range for the thread size and material grade as specified in applicable ASME standards.\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: 3\/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: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 100\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: 111321PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51723897798962,"sku":"111321PR","price":2183.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/59c24fb9f9de5797eb8c641813f3cecb.jpg?v=1788609540","url":"https:\/\/voomisupply.com\/products\/value-collection-111321pr-set-screw-5-16-18-x-3-8-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}