{"product_id":"value-collection-r63000888-set-screw-1-4-20-x-3-8-in-cup-point","title":"Value Collection R63000888 Set Screw 1\/4-20 X 3\/8 in Cup Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION R63000888 is a 1\/4-20 UNC set screw with a cup point tip and square drive, manufactured from grade 18-8 stainless steel. At 3\/8 inches in length (measured under head), this fully threaded fastener is designed to lock shafts, collars, pulleys, and similar components in place without a protruding head. The cup point bites into the mating surface to resist rotational and axial movement. Grade 18-8 stainless steel provides solid corrosion resistance for applications where mild chemical or moisture exposure is a concern. Machinists, millwrights, and maintenance technicians working in light industrial and HVAC equipment assembly commonly specify this fastener type.\u003c\/p\u003e\n\u003cp\u003eThis set screw is suited for shaft-to-hub connections in motors, blower wheels, pulleys, and collar assemblies found in HVAC, plumbing, and general mechanical systems. The 1\/4-20 UNC thread is one of the most widely used coarse-thread sizes in North American trade work, making this screw compatible with a broad range of tapped holes in standard collar and hub hardware. The square drive requires a matching square key for installation, which provides high torque transfer and reduces cam-out risk compared to hex socket drives.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCup point geometry bites into shaft surface for positive hold against rotation and axial shift\u003c\/li\u003e\n  \u003cli\u003eGrade 18-8 stainless steel construction for corrosion resistance in damp or mildly corrosive environments\u003c\/li\u003e\n  \u003cli\u003e1\/4-20 UNC coarse thread for broad compatibility with standard tapped collars and hubs\u003c\/li\u003e\n  \u003cli\u003eSquare drive for high torque transfer with minimal cam-out\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch length provides adequate thread engagement in standard collar wall thicknesses\u003c\/li\u003e\n  \u003cli\u003eHeadless design sits flush with or below the surface for clearance-sensitive assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1\/4-20 UNC cup point set screw for use in any tapped collar, hub, or fixture that accepts this thread size and drive type.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a correctly sized square key driver. De-energize and lock out any equipment before servicing shaft assemblies. Ensure the mating bore is clean and the set screw is threaded in straight to avoid cross-threading. Apply a thread-locking compound if vibration is expected, following the compound manufacturer's guidance for stainless fasteners.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3\/8 inches (measured 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: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 18-8\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: R63000888\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693720502578,"sku":"R63000888","price":1355.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/091563bfdbc0515aadd2d9b412b2c59f.jpg?v=1788316529","url":"https:\/\/voomisupply.com\/products\/value-collection-r63000888-set-screw-1-4-20-x-3-8-in-cup-point","provider":"Voomi Supply","version":"1.0","type":"link"}