{"product_id":"value-collection-221073pr-shoulder-screw-3-8-in-grade-8","title":"Value Collection 221073PR Shoulder Screw 3\/8 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 221073PR is a Grade 8 alloy steel shoulder screw designed for precision fastening applications that require a tight-tolerance cylindrical shoulder to locate, guide, or pivot a mating component. The shoulder measures 0.375 inches in diameter and 2 inches in length, providing a smooth bearing surface for bushings, linkages, or sliding parts. The threaded section is 5\/16-18 UNC and is driven with a 3\/16-inch hex socket key. The screw is left uncoated and meets ANSI B18.3 and ASTM A574 standards, making it a reliable choice for mechanical assemblies in industrial and manufacturing environments.\u003c\/p\u003e\n\u003cp\u003eShoulder screws of this type are used by maintenance technicians, machinists, and mechanical assemblers across a wide range of applications, including jigs and fixtures, die sets, cam followers, and pivot points in conveyor and linkage systems. The 2-inch shoulder length suits moderate-depth applications where precise shank engagement is needed. The hex socket drive allows installation in recessed or tight locations where a standard wrench cannot reach.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.375-inch shoulder diameter for precision fit in standard bushings and bores\u003c\/li\u003e\n  \u003cli\u003e2-inch shoulder length provides adequate bearing surface for pivot and guide applications\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC thread for positive clamping engagement\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch hex socket drive for installation in confined spaces\u003c\/li\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile strength and wear resistance\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-fit fastener for mechanical assemblies requiring a 3\/8-inch diameter shoulder screw with a 5\/16-18 UNC thread and 2-inch shoulder length.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists or mechanical assemblers using a 3\/16-inch hex key or socket driver. Ensure the mating bore diameter matches the shoulder tolerance before installation to avoid binding or misalignment. De-energize and lock out all machinery before servicing any assembly containing shoulder screws. Do not use an impact driver, as this may damage the hex socket recess or over-torque the threaded section.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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 (3\/8 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\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 Height\u003c\/strong\u003e: 0.250 inches (1\/4 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.543 to 0.562 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: 8\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: 0.08 pounds\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: 221073PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51691062755634,"sku":"221073PR","price":8411.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e09387ca26a21bcf7b895c912b85347c.jpg?v=1788279907","url":"https:\/\/voomisupply.com\/products\/value-collection-221073pr-shoulder-screw-3-8-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}