{"product_id":"value-collection-221082pr-shoulder-screw-3-8-in-grade-8-alloy-steel","title":"Value Collection 221082PR Shoulder Screw 3\/8 in Grade 8 Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 221082PR is a Grade 8 alloy steel shoulder screw designed for precision fastening applications requiring a smooth, hardened shoulder as a bearing, pivot, or locating surface. The shoulder measures 0.375 inches in diameter and 2-3\/4 inches in length, with a 5\/16-18 UNC threaded end for secure engagement. Drive interface is a 3\/16-inch hex socket. The head stands 0.25 inches tall with a head diameter ranging from 0.543 to 0.562 inches. Left uncoated, this screw is ready for use in standard dry or lightly lubricated environments. Machinists, tool-and-die technicians, and maintenance professionals install this type of fastener in jigs, fixtures, dies, and mechanical assemblies.\u003c\/p\u003e\n\u003cp\u003eShoulder screws of this type are used across light and heavy industrial applications wherever a hardened, close-tolerance cylindrical surface is needed to guide motion or serve as a pivot point. Typical installations include punch-and-die sets, spring-loaded assemblies, linkages, and fixture plates. The 5\/16-18 UNC thread engages standard tapped holes in steel tooling plates and machine components. This screw meets ANSI B18.3, ASME\/ANSI B18.3, and ASTM A574 standards, making it suitable for demanding mechanical and tooling applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high shear strength and hardness\u003c\/li\u003e\n  \u003cli\u003e0.375-inch shoulder diameter provides a precise bearing and locating surface\u003c\/li\u003e\n  \u003cli\u003e2-3\/4-inch shoulder length accommodates deep fixture and die assemblies\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC thread for engagement in standard tapped steel tooling plates\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch hex socket drive for easy installation with standard Allen keys or hex drivers\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 direct-use shoulder screw for standard 5\/16-18 UNC tapped applications in jigs, fixtures, dies, and mechanical assemblies requiring a 3\/8-inch shoulder diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a 3\/16-inch hex key or socket driver. Ensure the mating tapped hole is clean and threads are in good condition before driving the screw. Do not overtighten; torque to the value specified in the applicable design or maintenance documentation. Follow all applicable ANSI and facility safety standards when working with tooling and fixturing hardware.\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\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\u003eShoulder Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Length\u003c\/strong\u003e: 2-3\/4 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: 0.25 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\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: 0.11 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: 221082PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51691963023666,"sku":"221082PR","price":1489.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cebc3423de04f0dd726e28d49e88034e.jpg?v=1788291474","url":"https:\/\/voomisupply.com\/products\/value-collection-221082pr-shoulder-screw-3-8-in-grade-8-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}