{"product_id":"imscrews-3-8-16-x-1-1-4-carriage-bolts-304-stainless-steel-18-8-full-thread-heavy-duty-structural-bolts-for-decks-docks-industrial-brackets-20-pcs","title":"IMSCREWS 3\/8-16 x 1-1\/4 Carriage Bolts, 304 Stainless Steel (18-8), Full Thread Heavy-Duty Structural Bolts for Decks, Docks \u0026 Industrial Brackets, 20 PCS","description":"\u003cp\u003e\u003cstrong\u003eIMSCREWS 3\/8\"-16 x 1-1\/4\" Heavy-Duty 304 Stainless Steel Carriage Bolts (20 PCS)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eIndustrial Strength for Heavy Structural and Marine Projects\u003c\/strong\u003e\u003cbr\u003eThe IMSCREWS 3\/8\" x 1-1\/4\" carriage bolt is engineered for heavy-duty structural projects that demand maximum load-bearing capacity and a professional finish. With a robust 3\/8-inch diameter and a precise 1.25-inch length, these bolts are the \u003cstrong\u003eideal\u003c\/strong\u003e choice for securing industrial brackets, dock hardware, and heavy timber-to-metal connections. The full thread design provides maximum versatility for a \u003cstrong\u003esnug\u003c\/strong\u003e fit, ensuring structural integrity in both residential construction and demanding industrial or marine applications.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSuperior Durability and Safety-Focused Design\u003c\/strong\u003e\u003cbr\u003eForged from premium 18-8 (304) stainless steel, these fasteners offer superior resistance to rust and corrosion, even when exposed to harsh outdoor or humid environments. The smooth round head creates a \u003cstrong\u003eclean\u003c\/strong\u003e, tamper-resistant look that minimizes snagging hazards, making them a safe choice for high-traffic areas like boardwalks, playground sets, and outdoor furniture. The integrated square neck locks the bolt into place, preventing spinning and allowing for easy, one-sided tightening from the nut side with a single wrench.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e- Thread Size: 3\/8\"-16 Coarse (UNC); Length: 1-1\/4\" (Measured from Under Head)\u003cbr\u003e- Material: 304 (18-8) Stainless Steel; Full Thread\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePro-Tips:\u003c\/strong\u003e\u003cbr\u003e1. Use a 3\/8\" drill bit to ensure a \u003cstrong\u003esnug\u003c\/strong\u003e, structural fit for the square neck.\u003cbr\u003e2. Pair with stainless steel flat washers and hex nuts on the nut side to distribute heavy structural loads and protect material surfaces.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIndustrial 3\/8 Strength: The heavy-duty 3\/8-inch shank is engineered for maximum load-bearing and superior shear resistance, making it ideal for high-stress structural joints.\u003c\/li\u003e\n\u003cli\u003eCompact 1.25-Inch Reach: Designed forly sized for joining 1\/2 panels or fastening heavy-duty metal plates to timber where a flush finish is required without excess thread protrusion.\u003c\/li\u003e\n\u003cli\u003eMarine-Grade 304 Stainless: Forged from premium 18-8 (304) stainless steel, ensuring top-tier rust protection in coastal environments, docks, and humid garden settings.\u003c\/li\u003e\n\u003cli\u003eTamper-Resistant Security: The smooth round head features no drive socket, providing a clean professional finish while preventing unauthorized removal from the exterior.\u003c\/li\u003e\n\u003cli\u003eSelf-Locking Square Neck: The precision square shoulder bites firmly into wood, locking the bolt in place so you can tighten the nut from the back with just one wrench.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIN:\u003c\/strong\u003e B0F2F4FFZB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal SKU:\u003c\/strong\u003e IMS0836\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 3\/8\"-16 x 1-1\/4\"\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 20\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMSCREWS","offers":[{"title":"Default Title","offer_id":57034023076006,"sku":"B0F2F4FFZB","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/2784\/0903\/files\/619oV1ogmEL_82dcbcdd-5927-4475-ad43-03070896a750.jpg?v=1787034878","url":"https:\/\/www.imscrews.com\/products\/imscrews-3-8-16-x-1-1-4-carriage-bolts-304-stainless-steel-18-8-full-thread-heavy-duty-structural-bolts-for-decks-docks-industrial-brackets-20-pcs","provider":"IMSCREWS","version":"1.0","type":"link"}