{"product_id":"value-collection-hci20310275-100bx-hex-head-bolt-5-16-18","title":"Value Collection HCI20310275-100BX Hex Head Bolt 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION HCI20310275-100BX is a 5\/16-18 UNC hex head bolt designed for general mechanical and structural fastening applications. This bolt measures 2-3\/4 inches in length under the head and features partial threading along the shank. Manufactured from Grade 2 steel with a bright, uncoated finish, it meets ASTM A307 fastener standards. Partial threading leaves a smooth shank section near the head, which helps resist shear forces in bolted joints. This bolt is sized for standard inch-based tooling and is sold in a box of 100 pieces, making it well suited for contractors, maintenance technicians, and tradespeople who need reliable bulk fastener stock on the job.\u003c\/p\u003e\n\u003cp\u003eThis hex head bolt is used across a wide range of trade and light structural applications including HVAC equipment mounting, plumbing bracket assembly, electrical panel support structures, and general mechanical connections. The 5\/16-18 UNC thread pattern is one of the most common coarse-thread sizes in inch-based fastener systems, compatible with standard 5\/16-18 nuts and tapped holes. The ASTM A307 designation makes it appropriate for general-purpose bolted connections where high-strength fasteners are not required. Sold in increments of 100 pieces per box to support production and field service use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 UNC coarse thread pattern for broad compatibility with standard inch-based hardware\u003c\/li\u003e\n  \u003cli\u003e2-3\/4 inches length under head for moderate-depth fastening applications\u003c\/li\u003e\n  \u003cli\u003ePartial threading leaves a smooth shank section to help carry shear loads in bolted joints\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction meets ASTM A307 requirements for general-purpose fastening\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish for use in dry or protected environments\u003c\/li\u003e\n  \u003cli\u003eSold in a box of 100 pieces for bulk field and shop inventory\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 5\/16-18 UNC nuts, washers, and tapped holes in inch-based fastening applications. Suitable for general-purpose structural and mechanical connections meeting ASTM A307 requirements.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed with a standard 1\/2-inch hex wrench or socket driver sized for a 5\/16-18 bolt head. Always use a flat washer and appropriate nut torqued to the joint design specification. Do not use these Grade 2 fasteners in high-strength structural applications that require SAE Grade 5, Grade 8, or ASTM A325 hardware. Verify thread engagement depth meets a minimum of one bolt diameter per applicable mechanical codes before finalizing the connection.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 2-3\/4 inches\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\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Style\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASTM A307\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 100 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: HCI20310275-100BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51691269882162,"sku":"HCI20310275-100BX","price":4546.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4e465154dbe17330270a40fa5c6b0962.jpg?v=1788282478","url":"https:\/\/voomisupply.com\/products\/value-collection-hci20310275-100bx-hex-head-bolt-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}