{"product_id":"hillman-fasteners-240180-carriage-bolt-3-8-16-x-4-in-50-pack","title":"Hillman Fasteners 240180 Carriage Bolt 3\/8-16 X 4 in 50 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HILLMAN FASTENERS 240180 is a 3\/8-16 x 4 inch steel carriage bolt designed for through-bolting wood, metal, and composite materials in structural and general-purpose fastening applications. It features a round dome head that sits flush against the work surface and a square neck that bites into wood to prevent rotation during tightening. The coarse thread pitch (3\/8-16 UNC) provides strong clamping force and resists loosening under vibration. Sold in a 50-count box, this fastener suits contractors, maintenance technicians, and trade professionals who need reliable quantity stock on the job.\u003c\/p\u003e\n\u003cp\u003eThis carriage bolt is commonly used in wood framing, deck construction, equipment mounting, and structural assemblies where a smooth finished head is required on one face. The square neck seats into pre-drilled holes in lumber or soft materials, eliminating the need for a second wrench on the bolt side. It is suitable for both interior and exterior structural connections when used with appropriate corrosion-resistant hardware and coatings as required by the application environment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 UNC coarse thread for strong clamping and vibration resistance\u003c\/li\u003e\n  \u003cli\u003e4 inch length accommodates multi-layer or thick-material through-bolting\u003c\/li\u003e\n  \u003cli\u003eRound dome head provides a clean, low-profile finished surface\u003c\/li\u003e\n  \u003cli\u003eSquare neck prevents bolt rotation during nut tightening without a second tool\u003c\/li\u003e\n  \u003cli\u003eSteel construction for high tensile strength in structural fastening\u003c\/li\u003e\n  \u003cli\u003e50-count box quantity suited for production work and job-site stocking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 3\/8-16 UNC carriage bolt for use with 3\/8-16 hex nuts and washers in wood and light structural assemblies. Fits standard 3\/8 inch clearance holes.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by carpenters, general contractors, or maintenance trades using a standard wrench or socket on the nut side. Drill a clearance hole sized to allow the square neck to seat fully into the material before driving the bolt through. Tighten the nut with a wrench while the square neck locks the bolt in place. Consult applicable building codes for required fastener grades and corrosion protection when used in structural or exterior applications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Style\u003c\/strong\u003e: Round (Dome)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Style\u003c\/strong\u003e: Square Neck\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 50 per box\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 54.45 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: HILLMAN FASTENERS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 240180\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HILLMAN","offers":[{"title":"Default Title","offer_id":51557503271218,"sku":"240180","price":287.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a9aca8f191d19b3273a5ee28d9093e57_eed63144-0f93-4a2c-a1cc-b2447b575ce9.jpg?v=1786389640","url":"https:\/\/voomisupply.com\/products\/hillman-fasteners-240180-carriage-bolt-3-8-16-x-4-in-50-pack","provider":"Voomi Supply","version":"1.0","type":"link"}