{"product_id":"value-collection-581433pr-hex-socket-cap-screw-5-16-18-unc","title":"Value Collection 581433PR Hex Socket Cap Screw 5\/16-18 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581433PR is a hex socket cap screw designed for high-strength fastening applications in mechanical, industrial, and trade assembly work. Sized at 5\/16-18 UNC with a 4.5-inch length under head, it accepts a 1\/4-inch hex drive and is partially threaded for secure clamping against a mating surface. Manufactured from alloy steel with a black oxide finish, this screw delivers corrosion resistance and surface hardness suitable for demanding service environments. It conforms to ASME\/ANSI B18.3 and ASTM A574 standards, making it appropriate where code-compliant fasteners are specified.\u003c\/p\u003e\n\u003cp\u003eThis screw is used across a wide range of applications including equipment assembly, machinery mounting, structural bracketing, and HVAC or mechanical system component fastening. The partially threaded shank provides a stronger grip in through-bolt configurations and is well suited for joining thick material sections where full threading would reduce clamping force. Maintenance technicians, millwrights, pipefitters, and general mechanical contractors commonly install this type of fastener.\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 tapped holes\u003c\/li\u003e\n  \u003cli\u003e4.5-inch length under head for deep through-bolt or thick-material applications\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank for improved clamping strength\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch hex socket drive for standard Allen wrench or hex bit installation\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with black oxide coating for corrosion and wear resistance\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM A574 standards for dimensional and mechanical compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit fastener for any application requiring a 5\/16-18 UNC partially threaded hex socket cap screw with a 4.5-inch length under head.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed using a 1\/4-inch hex key or socket bit driver. Ensure the receiving hole is properly tapped to 5\/16-18 UNC before driving the screw. Apply appropriate thread lubricant or thread-locking compound as required by the application. Always de-energize or depressurize any system before replacing or installing fasteners on live equipment.\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: 4.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially 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\u003eStandard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM A574\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 581433PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51696300753202,"sku":"581433PR","price":1627.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fea1ea40c00c70d9e930ed3993671285.jpg?v=1788341203","url":"https:\/\/voomisupply.com\/products\/value-collection-581433pr-hex-socket-cap-screw-5-16-18-unc","provider":"Voomi Supply","version":"1.0","type":"link"}