{"product_id":"value-collection-225073pr-shoulder-screw-3-8-in-4140-alloy-steel","title":"Value Collection 225073PR Shoulder Screw 3\/8 in 4140 Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 225073PR is a hex socket shoulder screw machined from 4140 alloy steel, designed for precision fastening applications where a hardened, close-tolerance shoulder is required. The screw features a 3\/8 inch shoulder diameter and a 2 inch shoulder length, providing a smooth bearing surface for pivoting components, guide pins, or linkage assemblies. The 5\/16-18 UNC thread provides secure clamping, while the 3\/16 inch hex socket drive allows installation with standard Allen keys or hex bit drivers. This fastener meets ASME\/ANSI B18.3, ASTM F835, and IFI 124 standards, making it appropriate for demanding mechanical assemblies in industrial and commercial applications.\u003c\/p\u003e\n\u003cp\u003eShoulder screws of this type are commonly installed in machine fixtures, jigs, die sets, linear slide assemblies, and rotating linkage mechanisms where the unthreaded shoulder serves as the primary bearing or pivot surface. The 4140 alloy steel construction handles moderate-to-high stress environments. Machinists, millwrights, and maintenance technicians typically install these fasteners in production equipment and mechanical subassemblies requiring tight dimensional tolerances at the shoulder.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8 inch shoulder diameter with 2 inch shoulder length for precise bearing surface fitment\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC thread standard for compatibility with standard tapped holes\u003c\/li\u003e\n  \u003cli\u003e4140 alloy steel construction for high strength and wear resistance\u003c\/li\u003e\n  \u003cli\u003e3\/16 inch hex socket drive for installation with Allen keys or hex bit drivers\u003c\/li\u003e\n  \u003cli\u003e9\/16 inch head diameter and 1\/4 inch head height for low-profile clamping\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3, ASTM F835, and IFI 124 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard shoulder screw for use in mechanical assemblies requiring a 3\/8 inch diameter shoulder, 5\/16-18 UNC threaded engagement, and a hex socket drive per ASME\/ANSI B18.3.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists or maintenance technicians using a 3\/16 inch hex key or hex socket bit. Ensure the mating tapped hole is clean and dimensionally correct for 5\/16-18 UNC thread engagement before installation. Do not use the shoulder threads as the primary bearing surface — the unthreaded shoulder is intended to carry radial loads. De-energize and lock out any equipment before replacing shoulder screws in active machinery per applicable OSHA lockout\/tagout procedures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Length\u003c\/strong\u003e: 2 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\u003eMaterial\u003c\/strong\u003e: 4140 Alloy Steel\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: 9\/16 inches (0.5625 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 1\/4 inches (0.2500 inches)\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\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161619\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: 225073PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694690599218,"sku":"225073PR","price":6068.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0772260405ab24e41f92e8e7042f2950.jpg?v=1788327257","url":"https:\/\/voomisupply.com\/products\/value-collection-225073pr-shoulder-screw-3-8-in-4140-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}