{"product_id":"value-collection-121001pr-set-screw-4-40-x-1-8-in-cone-point","title":"Value Collection 121001PR Set Screw 4-40 X 1\/8 in Cone Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 121001PR is a Grade 8 alloy steel set screw with a cone point and hex drive, conforming to ASME\/ANSI B18.3 and ASTM F912 standards. With a 4-40 UNC thread size and an overall length of 0.125 inches, this fastener is engineered for precision holding and positioning applications where high clamping force and reliable bite into a mating shaft are required. The cone point geometry concentrates load at a single contact area, making it well suited for permanent or semi-permanent assemblies. Machinists, millwrights, and maintenance technicians typically install this fastener using a 0.050-inch hex key driver.\u003c\/p\u003e\n\u003cp\u003eThis set screw is used in light-duty mechanical assemblies across industrial, commercial, and maintenance applications. Common uses include securing collars, gears, pulleys, and knobs to shafts where flush or recessed fastener seating is needed. The 4-40 thread size targets small-diameter components and precision instruments. The cone point design provides strong holding power without requiring a drilled dimple in the shaft, though a slight indent in the shaft surface will improve retention. This fastener ships in multiples of 100 per order.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile and torsional strength\u003c\/li\u003e\n  \u003cli\u003eCone point geometry concentrates clamping force for positive shaft engagement\u003c\/li\u003e\n  \u003cli\u003eHex drive (0.050-inch key size) allows installation in recessed or counterbored holes\u003c\/li\u003e\n  \u003cli\u003e4-40 UNC thread standard ensures broad compatibility with inch-series tapped components\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM F912 dimensional and performance standards\u003c\/li\u003e\n  \u003cli\u003eOverall length of 0.125 inches suits thin-wall and compact assembly profiles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard-stock fastener for any 4-40 UNC tapped set screw application requiring a cone point and hex drive per ASME\/ANSI B18.3 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed using a 0.050-inch hex key; apply torque carefully to avoid stripping the small drive recess. De-energize or lock out any rotating equipment before installing or adjusting set screws on shafts. Ensure the mating thread is clean and free of debris before engagement. Follow applicable facility maintenance and machine safety procedures during installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength (Overall)\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Cone\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: 0.050 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\u003eFastener Standard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM F912\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: 121001PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699897827634,"sku":"121001PR","price":2922.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ff734a4afe9837bbda722592bd427b7d_1a3682dd-464e-4cbb-b208-2ed46c0d0876.jpg?v=1788382821","url":"https:\/\/voomisupply.com\/products\/value-collection-121001pr-set-screw-4-40-x-1-8-in-cone-point","provider":"Voomi Supply","version":"1.0","type":"link"}