{"product_id":"imscrews-1-2-13-x-3-1-2-carriage-bolts-304-stainless-steel-18-8-extended-structural-fasteners-5-pcs","title":"IMSCREWS 1\/2-13 x 3-1\/2 Carriage Bolts, 304 Stainless Steel (18-8), Extended Structural Fasteners, 5 PCS","description":"\u003cp\u003e\u003cstrong\u003eIMSCREWS 1\/2\"-13 x 3-1\/2\" Heavy-Duty 304 SS Carriage Bolts (5 PCS)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSubstantial Strength for Thick Structural and Marine Projects\u003c\/strong\u003e\u003cbr\u003eThe IMSCREWS 1\/2\" x 3-1\/2\" carriage bolt is engineered for high-load projects requiring maximum shear resistance and deep penetration. With a robust 1\/2-inch diameter and an extended 3.5-inch length, these bolts are the \u003cstrong\u003eideal\u003c\/strong\u003e choice for securing industrial brackets, dock hardware, and 4x4 timber posts. The length is perfectly calculated to pass through heavy lumber while leaving sufficient thread for structural washers and nuts to ensure a \u003cstrong\u003esnug\u003c\/strong\u003e, permanent connection. Built for longevity, they offer the stability required for outdoor pergolas, heavy fencing, and commercial timber framing.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSuperior Durability and Safety-Focused Design\u003c\/strong\u003e\u003cbr\u003eForged from premium 18-8 (304) SS, these fasteners offer superior resistance to rust in coastal or humid environments. The smooth round head creates a \u003cstrong\u003eclean\u003c\/strong\u003e, low-profile look that reduces snagging hazards, making them a safe choice for playground sets, railings, and residential decks. The integrated square neck locks the bolt into place, preventing spinning and allowing for easy, one-sided tightening from the nut side.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eQuick FAQ:\u003c\/strong\u003e\u003cbr\u003e- \u003cstrong\u003eDrill Bit Size?\u003c\/strong\u003e Use a \u003cstrong\u003e1\/2-inch drill bit\u003c\/strong\u003e for a \u003cstrong\u003esnug\u003c\/strong\u003e, structural fit.\u003cbr\u003e- \u003cstrong\u003eHow to Measure?\u003c\/strong\u003e Length is measured from \u003cstrong\u003eunder the head\u003c\/strong\u003e to the tip.\u003cbr\u003e- \u003cstrong\u003eWill they rust?\u003c\/strong\u003e No. \u003cstrong\u003e304 SS\u003c\/strong\u003e provides superior protection in outdoor environments.\u003cbr\u003e- \u003cstrong\u003eHeavy Duty?\u003c\/strong\u003e Yes. The 1\/2\" shank offers 25,000+ PSI shear strength for structural safety.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e 1\/2\"-13 Coarse; Length: 3-1\/2\"; Material: 304 SS; Full Thread\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReinforced 1\/2 Shank: The 1\/2-inch diameter provides high shear strength for critical load-bearing joints in structural timber and heavy framing.\u003c\/li\u003e\n\u003cli\u003e3.5-Inch Deep Reach: Specifically sized to penetrate standard 4x4 posts (3.5 actual thickness) or join multiple layers of thick dimensional lumber.\u003c\/li\u003e\n\u003cli\u003eWeather-Resistant 304 SS: Forged from 18-8 (304) stainless steel, offering high durability in humid environments and with pressure-treated lumber.\u003c\/li\u003e\n\u003cli\u003eSmooth Safety Head: The rounded, drive-free head minimizes snagging hazards while providing a clean, professional finish for visible hardware.\u003c\/li\u003e\n\u003cli\u003eSelf-Locking Square Neck: The integrated square shoulder bites into wood to prevent rotation, enabling efficient one-sided installation from the nut side.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0F2F6CF4B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS0902\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/2\"-13 x 3-1\/2\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Style:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMSCREWS","offers":[{"title":"Default Title","offer_id":57034051322022,"sku":"B0F2F6CF4B","price":15.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/51ZaVl7AlSL_8be6bca7-b62c-4be8-baf7-58f543df11b3.jpg?v=1787034953","url":"https:\/\/www.imscrews.com\/ru\/products\/imscrews-1-2-13-x-3-1-2-carriage-bolts-304-stainless-steel-18-8-extended-structural-fasteners-5-pcs","provider":"IMSCREWS","version":"1.0","type":"link"}