{"product_id":"value-collection-403066pr-hex-head-cap-screw-5-16-18","title":"Value Collection 403066PR Hex Head Cap Screw 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Value Collection 403066PR is a 5\/16-18 x 1-3\/4 inch partially threaded hex head cap screw designed for general-purpose fastening in mechanical, structural, and industrial assembly applications. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener provides corrosion resistance suitable for indoor and light-duty outdoor use. The 5\/16-18 UNC thread is a coarse-pitch standard, making it compatible with a wide range of tapped holes and hex nuts. The partially threaded shank allows the unthreaded section to bear shear loads or serve as a shoulder in certain joint configurations. Installed with a 1\/2-inch hex wrench or socket, it fits standard tooling used across trade, MRO, and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis fastener is suited for light-to-medium duty mechanical assemblies in HVAC equipment panels, electrical enclosures, plumbing fixtures, pump housings, and general equipment maintenance. The coarse 5\/16-18 UNC thread engages quickly and resists cross-threading in field conditions. The zinc coating meets basic corrosion resistance requirements for dry or low-humidity environments. Trade professionals and maintenance technicians commonly use this size for securing brackets, cover panels, and component mounting hardware where Grade 2 steel strength is adequate for the load requirement.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC coarse thread for fast engagement and broad compatibility with standard tapped hardware\u003c\/li\u003e\n\u003cli\u003ePartially threaded shank provides an unthreaded bearing surface for shear load applications\u003c\/li\u003e\n\u003cli\u003eGrade 2 steel construction meets standard tensile requirements for general-purpose fastening\u003c\/li\u003e\n\u003cli\u003eZinc-plated finish offers basic corrosion resistance for dry and low-humidity environments\u003c\/li\u003e\n\u003cli\u003e1\/2-inch hex drive fits common socket and wrench tooling used across all trades\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in any application requiring a 5\/16-18 UNC partially threaded hex head cap screw with Grade 2 steel strength and zinc-plated finish.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall with a 1\/2-inch hex socket or open-end wrench. Ensure the mating thread is clean and free of debris before engagement. Do not exceed the torque rating appropriate for Grade 2 steel at this thread size, and avoid over-torquing into soft or tapped aluminum substrates. Always de-energize electrical systems and relieve pressure from fluid systems before accessing panels or components secured with this fastener.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1-3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Key Size\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 403066PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51714548269362,"sku":"403066PR","price":3180.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ba0413b701b214caafdd1c8b65572386.jpg?v=1788503053","url":"https:\/\/voomisupply.com\/products\/value-collection-403066pr-hex-head-cap-screw-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}