{"product_id":"value-collection-711074pr-shoulder-screw-3-8-in-4140-alloy-steel","title":"Value Collection 711074PR Shoulder Screw 3\/8 in 4140 Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 711074PR is a hex socket shoulder screw machined from 4140 alloy steel and left uncoated for a clean, bare-metal finish. The shoulder measures 3\/8 inch in diameter and 7\/8 inch in length, providing the precise bearing surface that shoulder screws are selected for. The 5\/16-18 UNC threaded end secures the fastener into tapped components, while the 9\/16 inch head diameter and 1\/4 inch head height suit recessed hex-drive installation using a 3\/16 inch hex key. This fastener is appropriate for mechanical assemblies, jigs, fixtures, and precision linkage applications where a hardened, close-tolerance pivot or guide pin is required. Machinists, tool and die technicians, and mechanical assembly professionals commonly specify this type of fastener.\u003c\/p\u003e\n\u003cp\u003eShoulder screws of this configuration are used in industrial machinery, fixture plates, stamping dies, and mechanical linkages where rotating or sliding components need a hardened shaft to ride against. The 4140 alloy steel construction provides the strength and surface hardness needed for dynamic load applications. This screw meets ANSI B18.3 and ASME\/ANSI B18.3 dimensional standards as well as ASTM A574 mechanical property requirements, making it appropriate for applications where documented fastener standards are specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8 inch shoulder diameter with 7\/8 inch shoulder length for precise bearing surface fitment\u003c\/li\u003e\n  \u003cli\u003e4140 alloy steel construction for high tensile strength and wear resistance\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC threaded end for secure engagement in standard tapped holes\u003c\/li\u003e\n  \u003cli\u003eHex socket drive accepts a 3\/16 inch hex key for recessed installation\u003c\/li\u003e\n  \u003cli\u003eUncoated finish — no plating thickness to account for in close-tolerance bores\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI B18.3, ASME\/ANSI B18.3, and ASTM A574 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard-stock shoulder screw for mechanical assemblies requiring a 3\/8 inch shoulder diameter, 7\/8 inch shoulder length, and 5\/16-18 UNC threaded end conforming to ANSI B18.3 dimensional standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall using a 3\/16 inch hex key; do not use impact drivers on socket head shoulder screws as this can damage the drive recess or distort the shoulder. Ensure the mating bore diameter is matched to the shoulder diameter tolerance specified by the assembly drawing before installation. Torque to values specified by the assembly engineer or applicable fastener standard — do not estimate torque on precision shoulder screws. Power down and de-energize any machinery before servicing fasteners in dynamic assemblies.\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 inch (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Length\u003c\/strong\u003e: 7\/8 inch\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\u003eHead Diameter\u003c\/strong\u003e: 9\/16 inch (0.5625 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\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 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 4140 Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI B18.3, ASME\/ANSI B18.3, ASTM A574\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\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: 711074PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51720833466674,"sku":"711074PR","price":1610.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b815a3add0dc34448517780264c7ed39.jpg?v=1788569718","url":"https:\/\/voomisupply.com\/products\/value-collection-711074pr-shoulder-screw-3-8-in-4140-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}