{"product_id":"value-collection-225079pr-shoulder-screw-3-8-in-4140-alloy-steel","title":"Value Collection 225079PR Shoulder Screw 3\/8 in 4140 Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 225079PR is a hex socket shoulder screw machined from 4140 alloy steel for use in precision mechanical assemblies, jigs, fixtures, and tooling applications. The shoulder measures 0.375 inches in diameter and 2.5 inches in length, providing an accurate bearing surface for pivot points, linkages, and guided components. The 5\/16-18 UNC threaded section locks the fastener securely into tapped holes. A 3\/16-inch hex socket drive allows installation with a standard hex key or Allen driver. This fastener is specified by machinists, tool and die makers, and maintenance technicians who require close-tolerance shoulder dimensions for controlled-motion assemblies.\u003c\/p\u003e\u003cp\u003eShoulder screws of this type are used wherever a precision-ground cylindrical surface is needed to serve as a shaft, pivot, or guide post. Common applications include die sets, cam mechanisms, stripper plates, plastic injection tooling, and general industrial machinery. The 4140 alloy steel construction provides high tensile strength and wear resistance suitable for demanding production environments. This fastener is appropriate for both OEM manufacturing and MRO replacement use in industrial maintenance settings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eShoulder diameter of 0.375 inches provides a precision bearing surface for pivot and guide applications\u003c\/li\u003e\n\u003cli\u003e2.5-inch shoulder length suits deeper fixture and tooling assemblies\u003c\/li\u003e\n\u003cli\u003e4140 alloy steel construction delivers high strength and resistance to wear and fatigue\u003c\/li\u003e\n\u003cli\u003e5\/16-18 UNC thread standard ensures broad compatibility with standard tapped holes\u003c\/li\u003e\n\u003cli\u003e3\/16-inch hex socket drive for installation with a hex key or Allen driver\u003c\/li\u003e\n\u003cli\u003eMeets ASME\/ANSI B18.3, ASTM F835, and IFI 124 standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard shoulder screw conforming to ASME\/ANSI B18.3, ASTM F835, and IFI 124 specifications, suitable for tapped 5\/16-18 UNC holes in industrial fixtures, tooling, and mechanical assemblies requiring a 3\/8-inch shoulder diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a 3\/16-inch hex key. Ensure the receiving tapped hole meets 5\/16-18 UNC thread specifications and is clean and free of debris before installation. Do not overtorque the threaded section, as the shoulder must seat flush against the mating surface to function as an accurate bearing or pivot surface. Follow applicable facility safety lockout\/tagout procedures before servicing any machinery where this fastener is being replaced.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Shoulder Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShoulder Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShoulder Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex Socket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.5625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 4140 Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM F835, IFI 124\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.5 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: 5\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: 225079PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694847426866,"sku":"225079PR","price":3743.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6669ab845f2adaaf3c2a6a705ac982e3.jpg?v=1788329023","url":"https:\/\/voomisupply.com\/products\/value-collection-225079pr-shoulder-screw-3-8-in-4140-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}