{"product_id":"value-collection-409078pr-set-screw-3-8-16-x-2-1-2-in-cup-point","title":"Value Collection 409078PR Set Screw 3\/8-16 X 2-1\/2 in Cup Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 409078PR is a cup point set screw designed for mechanical assemblies where a fastener must apply holding force without projecting above the workpiece surface. Sized at 3\/8-16 UNC thread by 2-1\/2 inches in length, this screw is driven with a square drive tool and seats a recessed cup point into the mating surface to resist rotation and axial movement. Made from Grade 2 steel with a bright, uncoated finish, it suits standard indoor mechanical and industrial applications. Machinists, millwrights, and maintenance technicians use cup point set screws for shaft collars, pulleys, sprockets, and similar mechanical components.\u003c\/p\u003e\u003cp\u003eThis set screw applies to general-purpose mechanical assemblies where a flush or recessed fastener is required. The 3\/8-16 UNC thread is a common size found in shaft collar and hub assemblies across light industrial machinery, HVAC equipment, and mechanical drive systems. The cup point geometry creates a defined contact area that holds position under moderate torque and vibration without causing the same degree of surface damage associated with cone or oval point designs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/8-16 UNC thread ensures compatibility with standard tapped holes in that size class\u003c\/li\u003e\n\u003cli\u003e2-1\/2 inch length measured under head for deep engagement applications\u003c\/li\u003e\n\u003cli\u003eCup point geometry provides defined bite into mating surface for positive holding\u003c\/li\u003e\n\u003cli\u003eSquare drive reduces cam-out risk during installation and removal\u003c\/li\u003e\n\u003cli\u003eGrade 2 steel construction suitable for moderate-load mechanical fastening\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish for use in dry or lightly protected environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose replacement or stock set screw for 3\/8-16 UNC tapped holes in shaft collars, hubs, pulleys, and similar mechanical assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a square drive wrench or bit sized to fit the socket. Always verify the tapped hole thread pitch and diameter before installation. De-energize and lock out any rotating machinery before servicing shaft-mounted components secured by set screws. Do not exceed the torque capacity appropriate to Grade 2 steel in this thread size, and inspect the cup point seating surface for damage before reinstalling in safety-critical assemblies.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 2-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Measurement Type\u003c\/strong\u003e: Length Under Head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Cup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Square\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 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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\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: 409078PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693897154866,"sku":"409078PR","price":4744.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/18adc0f2096ba75ea8140ea0708d38f7.jpg?v=1788318728","url":"https:\/\/voomisupply.com\/products\/value-collection-409078pr-set-screw-3-8-16-x-2-1-2-in-cup-point","provider":"Voomi Supply","version":"1.0","type":"link"}