{"product_id":"value-collection-111247pr-set-screw-1-4-20-x-5-16-in-grade-8","title":"Value Collection 111247PR Set Screw 1\/4-20 X 5\/16 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 111247PR is a 1\/4-20 UNC set screw with a knurled cup point, manufactured from Grade 8 alloy steel. Set screws are headless fasteners used to secure a component — such as a collar, pulley, gear, or sprocket — against a shaft by applying clamping force directly through the point. The knurled cup point bites into the mating surface to resist rotation and axial movement. At 5\/16 inches overall length with a 1\/8-inch hex drive, this fastener is sized for compact assemblies where a standard cap screw cannot be used. It meets ASME\/ANSI B18.3 and ASTM F912 standards. Installation requires a 1\/8-inch hex key.\u003c\/p\u003e\n\u003cp\u003eThis set screw is suited for mechanical assemblies across industrial, HVAC, and equipment-maintenance applications. Typical uses include securing shaft collars on fan and blower assemblies, locking pulleys on motor shafts, and fixing couplings in pump or drive systems. The Grade 8 alloy steel construction is appropriate for moderate-to-high torque applications where a softer set screw would deform or back out under vibration or load. This fastener uses fractional inch measurement and UNC thread form, common in North American equipment manufacturing and repair.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eKnurled cup point grips mating shaft surface to resist rotation and axial movement\u003c\/li\u003e\n  \u003cli\u003eGrade 8 alloy steel for high-strength performance under torque and vibration\u003c\/li\u003e\n  \u003cli\u003e1\/4-20 UNC thread for compatibility with standard fractional inch tapped holes\u003c\/li\u003e\n  \u003cli\u003e1\/8-inch hex drive accepts a standard hex key or Allen driver\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM F912 dimensional and mechanical standards\u003c\/li\u003e\n  \u003cli\u003eHeadless design allows flush or recessed installation in tapped through-holes or blind holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in any tapped 1\/4-20 UNC blind hole or through-hole requiring a headless set screw with a knurled cup point. Suitable as a direct replacement in mechanical assemblies that specify an ASME\/ANSI B18.3 or ASTM F912 compliant socket set screw at this thread size and length.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with a 1\/8-inch hex key; ensure the key is fully seated before applying torque to avoid rounding the drive. De-energize and lock out any equipment before servicing shaft-mounted components secured by set screws. Do not reuse a set screw that shows deformation at the point or drive socket. Apply thread-locking compound per the equipment manufacturer's specification when vibration resistance is required.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 5\/16 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: 1\/8 inch (0.1250 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 and 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\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: 111247PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693382861106,"sku":"111247PR","price":2080.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed28e1bbb1c5f123bda325ba39e90bf8_298d0d7c-56a7-43d2-9c96-34b7194999a5.jpg?v=1788311527","url":"https:\/\/voomisupply.com\/products\/value-collection-111247pr-set-screw-1-4-20-x-5-16-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}