{"product_id":"holo-krome-08018-shoulder-screw-5-16-in-hex-socket-alloy-steel","title":"Holo-krome 08018 Shoulder Screw 5\/16 in Hex Socket Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 08018 is a hex socket shoulder screw machined from Grade 8 alloy steel, designed for precision fastening applications where a controlled-diameter shoulder serves as a bearing surface, pivot point, or locating pin. The shoulder measures 5\/16 inch in diameter and 1\/2 inch in length, with a 1\/4-20 UNC threaded end extending 0.438 inches. The rounded head accepts a 5\/32 inch hex key drive. Overall assembled length is 1.157 inches. This fastener is installed by maintenance technicians, machine builders, and industrial assembly professionals in applications requiring tight positional tolerances.\u003c\/p\u003e\n\u003cp\u003eShoulder screws of this type are used in jigs, fixtures, dies, cams, linkages, and precision mechanical assemblies where a hardened, ground shoulder must rotate freely in a bore or act as a stop. The 5\/16 inch shoulder diameter suits tight-tolerance bores in light to medium duty mechanical components. The uncoated finish maintains dimensional accuracy without adding coating thickness variability. This screw conforms to ASME B18.3 for hex socket fasteners and ASME B1.1 for thread form, making it suitable for controlled industrial and OEM environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile strength in demanding mechanical assemblies\u003c\/li\u003e\n  \u003cli\u003e5\/16 inch shoulder diameter with 0.3120 inch decimal dimension for precise bore fitment\u003c\/li\u003e\n  \u003cli\u003e1\/2 inch shoulder length provides consistent bearing surface or pivot travel\u003c\/li\u003e\n  \u003cli\u003e1\/4-20 UNC thread at 0.438 inch length for secure threaded engagement\u003c\/li\u003e\n  \u003cli\u003e5\/32 inch hex socket drive allows torque application in confined spaces\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.3 and ASME B1.1 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard ASME B18.3 hex socket shoulder screw for use in precision mechanical assemblies, jigs, fixtures, and OEM equipment requiring a 5\/16 inch shoulder diameter and 1\/4-20 threaded shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machine builders, tool and die technicians, or maintenance professionals using a 5\/32 inch hex key or T-handle driver. De-energize and lock out all equipment before servicing any assembly containing this fastener. Do not exceed the rated torque capacity of the 1\/4-20 thread; consult published torque tables for Grade 8 alloy steel at this thread size. Verify bore diameter tolerance against the 0.3120 inch shoulder dimension before assembly to ensure proper fit and intended shoulder function.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Diameter\u003c\/strong\u003e: 5\/16 inch (0.3120 inches decimal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShoulder Length\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.438 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.157 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Rounded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.419 to 0.438 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.209 to 0.219 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: 5\/32 inch\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\u003eThread Standard\u003c\/strong\u003e: UNRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B1.1, ASME B18.3\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: HOLO-KROME\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 08018\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51731538313522,"sku":"08018","price":11626.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1cc27e73c30a7886ceb1ffe06da17a95.jpg?v=1788732289","url":"https:\/\/voomisupply.com\/products\/holo-krome-08018-shoulder-screw-5-16-in-hex-socket-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}