{"product_id":"value-collection-581425pr-hex-socket-cap-screw-5-16-18-unc","title":"Value Collection 581425PR Hex Socket Cap Screw 5\/16-18 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581425PR is a hex socket cap screw designed for high-strength fastening applications across industrial, mechanical, and structural assemblies. Threaded 5\/16-18 UNC and measuring 1-3\/8 inches under the head with full threading throughout, this fastener delivers reliable clamping force in tight-clearance installations where a standard hex head wrench cannot reach. The 1\/4-inch hex drive accepts a standard Allen key or hex bit. Manufactured from alloy steel with a black oxide finish, the 581425PR provides good corrosion resistance in dry and mildly humid environments while maintaining the high tensile strength expected of ASTM A574-grade socket cap screws.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for machinery assembly, fixture building, tooling, and general mechanical maintenance work. Fully threaded along its entire shank length, it performs well in through-hole and insert applications where maximum thread engagement is required. The black oxide finish reduces light reflection and provides a degree of surface protection without adding significant dimensional build-up. This fastener is typically installed by machinists, millwrights, maintenance technicians, and mechanical contractors working on metal fabrication and equipment assembly.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 UNC thread size for broad compatibility with standard inch-series hardware\u003c\/li\u003e\n  \u003cli\u003e1-3\/8 inch length under head, fully threaded for maximum engagement\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch hex socket drive for use with Allen keys or hex bit drivers\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meeting ASTM A574 and ASME\/ANSI B18.3 standards\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for surface protection and low-reflectivity appearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard ASME\/ANSI B18.3 and ASTM A574 compliant hex socket cap screw for use in any application requiring a 5\/16-18 UNC fully threaded fastener with a 1\/4-inch hex drive.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall using a 1\/4-inch hex key or appropriate hex bit driver. Ensure mating threads are clean and free of debris before assembly. Apply thread lubricant or thread-locking compound as required by the application specification. Do not exceed the rated torque for 5\/16-18 alloy steel fasteners as specified in the relevant ASME or equipment manufacturer documentation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully Threaded\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: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: 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: 581425PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51690294837554,"sku":"581425PR","price":9268.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a4f2d853533eb6ca5de2e1e632273bbb.jpg?v=1788268301","url":"https:\/\/voomisupply.com\/products\/value-collection-581425pr-hex-socket-cap-screw-5-16-18-unc","provider":"Voomi Supply","version":"1.0","type":"link"}