{"title":"Heavy Hex Nuts","description":"\u003ch2\u003eHeavy Hex Nuts for High-Load Fastening Applications\u003c\/h2\u003e\n\u003cp\u003eHeavy hex nuts are made for demanding fastening jobs. With a wider and thicker profile than standard hex nuts, they’re built to handle high torque and heavy loads, perfect for structural steel, industrial machinery, transportation systems, and more.\u003c\/p\u003e\n\u003ch3\u003eWhy Use Heavy Hex Nuts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad-Bearing Strength:\u003c\/strong\u003e Larger size offers more surface contact, helping prevent thread stripping and improving clamp force.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Resistance:\u003c\/strong\u003e Ideal for bolted joints exposed to dynamic loads or movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatility:\u003c\/strong\u003e Trusted across construction, maintenance, and infrastructure industries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStyles Available\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Heavy Hex Nuts:\u003c\/strong\u003e Bigger and stronger than regular hex nuts, used for high-strength bolted connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJam Nuts:\u003c\/strong\u003e Thinner profile, great where space is limited or when used as a locknut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking Nuts:\u003c\/strong\u003e Designed to resist loosening from vibration or motion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGrades \u0026amp; Materials\u003c\/h3\u003e\n\u003cp\u003eChoose the right grade based on your application:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade A (ASTM A563):\u003c\/strong\u003e General-purpose fastening with low to medium carbon steel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade 2H (ASTM A194):\u003c\/strong\u003e Heat-treated, high-strength nuts used in bridges and heavy construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade DH (ASTM A563):\u003c\/strong\u003e Higher strength than 2H, ideal for critical structural connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade C (ASTM A563):\u003c\/strong\u003e Quenched and tempered for strength and toughness in equipment applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless Steel (304\/316):\u003c\/strong\u003e Excellent corrosion resistance for marine, food-grade, or chemical use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNeed Help?\u003c\/h3\u003e\n\u003cp\u003eNot sure which heavy hex nut fits your project? Our team is here to help. Contact us for expert guidance, or browse related products like \u003ca href=\"\/collections\/threaded-rod\" title=\"Threaded Rod\"\u003ethreaded rod\u003c\/a\u003e and \u003ca href=\"\/collections\/washers\" title=\"Washers\"\u003ewashers\u003c\/a\u003e to complete your setup.\u003c\/p\u003e","products":[{"product_id":"1-2-13-heavy-hex-nut-a194-grade-2h-plain-finish","title":"Conquest 1\/2\"-13  Heavy Hex Nut, A194 Grade 2H - Plain Finish","description":"\u003ch2\u003eConquest A194 Grade 2H Heavy Hex Nut – 1\/2\"-13 Plain Steel\u003c\/h2\u003e\n\u003cp\u003eThe Conquest 1\/2\"-13 Heavy Hex Nut is a high-strength fastener designed for use in demanding structural and industrial applications. Manufactured from medium carbon steel that is quenched and tempered, this nut offers excellent hardness and tensile strength. Its plain steel finish makes it ideal for interior use or controlled environments where cost efficiency and mechanical performance are the priority.\u003c\/p\u003e\n\n\u003ch2\u003ePlain Finish 1\/2\"-13 Heavy Hex Nut for Structural and High-Stress Connections\u003c\/h2\u003e\n\u003cp\u003eWith coarse internal threading at 13 threads per inch, this nut is compatible with standard 1\/2\" diameter bolts and threaded rod. Conforming to ASTM A194 Grade 2H requirements, it is built for high-pressure and high-temperature service, often paired with A325 or A490 bolts or Grade B7 rod. Its heavy hex profile provides larger flats for higher torque applications and better wrench engagement in tough conditions.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesigned for High-Strength Fastening:\u003c\/strong\u003e Built for use with structural bolts, threaded rods, or studs in high-load applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon Steel Construction:\u003c\/strong\u003e Heat-treated medium carbon steel offers strength and wear resistance in heavy mechanical assemblies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\/TPI:\u003c\/strong\u003e Coarse 1\/2\"-13 internal threads (13 threads per inch) for compatibility with standard industrial fasteners.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Type:\u003c\/strong\u003e Plain steel finish offers a cost-effective solution for indoor or dry environment applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy Hex Profile:\u003c\/strong\u003e Oversized wrench flats provide improved torque control and stability under load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStructural steel connections using A325 or A490 bolts\u003c\/li\u003e\n  \u003cli\u003eIndustrial equipment assembly and maintenance\u003c\/li\u003e\n  \u003cli\u003eThreaded rod installations using Grade B7 material\u003c\/li\u003e\n  \u003cli\u003eMechanical fastening in high-load or pressure-rated systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm matching thread size (1\/2\"-13) with bolt or rod before installation.\u003c\/li\u003e\n  \u003cli\u003eHand-thread first to avoid cross-threading.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate torque per material spec for optimal performance.\u003c\/li\u003e\n  \u003cli\u003eNot recommended for outdoor or corrosive environments without surface treatment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated Items:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/structural-bolts\"\u003eA325 Structural Hex Bolts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/grade-b7-threaded-rod\"\u003eGrade B7 Threaded Rod\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eCalifornia Residents: \u003ca style=\"color: black;\" href=\"\/pages\/prop-65\" target=\"_blank\"\u003eWARNING\u003c\/a\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"US Cargo Control","offers":[{"title":"Default Title","offer_id":44428516491309,"sku":"ABN12D","price":0.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0283\/2229\/9949\/files\/ABN12D-1_a1248e1a-60b4-49da-8779-bd57e911c571.jpg?v=1768411533"},{"product_id":"1-2-conquest-a563-grade-dh-heavy-hex-nut-plain","title":"Conquest 1\/2\"  A563 Grade DH Heavy Hex Nut - Plain","description":"\u003ch2\u003e1\/2\"-13 Conquest A563 Grade DH Heavy Hex Nut – Plain\u003c\/h2\u003e\n\n\u003cp\u003eThe 1\/2\"-13 Conquest A563 Grade DH Heavy Hex Nut is a high-strength structural fastener designed for use in demanding industrial, commercial, and structural applications. Made from quenched and tempered medium carbon steel with a plain finish, this nut delivers excellent mechanical performance and is engineered to pair with structural bolts and high-strength threaded rod systems.\u003c\/p\u003e\n\n\u003ch2\u003ePlain Finish Structural Hex Nut for A325 and A490 Connections\u003c\/h2\u003e\n\n\u003cp\u003eWith a 1\/2\" diameter and 13 TPI coarse thread, this heavy hex nut is manufactured to ASTM A563 Grade DH standards, making it suitable for critical fastening in steel structures, heavy equipment, and infrastructure installations. The plain finish allows for controlled welding environments or use in protected interior settings where additional coatings aren't necessary.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Quenched and tempered medium carbon steel for structural-grade strength.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\/TPI:\u003c\/strong\u003e Coarse thread with 13 threads per inch for secure engagement and load handling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy Hex Design:\u003c\/strong\u003e Oversized across-flats and height to maximize bearing surface and torque application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Plain finish suitable for welding or indoor, non-corrosive environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard Compliance:\u003c\/strong\u003e Meets ASTM A563 Grade DH mechanical and dimensional requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSteel construction with A325 or A490 structural bolts\u003c\/li\u003e\n  \u003cli\u003eHigh-strength anchor bolt systems\u003c\/li\u003e\n  \u003cli\u003eStructural steel connections and framing\u003c\/li\u003e\n  \u003cli\u003eHeavy equipment fabrication and assemblies\u003c\/li\u003e\n  \u003cli\u003eBridge and infrastructure bolting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse with 1\/2\"-13 A325 or A490 bolts, or high-strength threaded rod such as B7 or A307 Grade B.\u003c\/li\u003e\n  \u003cli\u003eApply high-torque using appropriate heavy hex sockets or wrenches.\u003c\/li\u003e\n  \u003cli\u003eEnsure clean, dry threads before tightening, especially in welded applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated Items:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/structural-bolts\"\u003eA325 Structural Hex Bolts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/a307-threaded-rod\"\u003eA307 Threaded Rod\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/grade-b7-threaded-rod\"\u003eGrade B7 Threaded Rod\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eCalifornia Residents: \u003ca style=\"color: black;\" href=\"\/pages\/prop-65\" target=\"_blank\"\u003eWARNING\u003c\/a\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"US Cargo Control","offers":[{"title":"Default Title","offer_id":44428581044269,"sku":"HNA563DH-12","price":0.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0283\/2229\/9949\/files\/HNA563DH-12-1_44a4855b-1125-4693-9ad8-fe754f86dbc3.jpg?v=1768411573"},{"product_id":"1-4-20-conquest-heavy-hex-nut-a563-grade-a-plain-finish","title":"Conquest 1\/4\"-20  Heavy Hex Nut, A563 Grade A - Plain Finish","description":"\u003ch2\u003e1\/4\"-20 Conquest Heavy Hex Nut, A563 Grade A – Plain Finish\u003c\/h2\u003e\n\n\u003cp\u003eThe 1\/4\"-20 Conquest Heavy Hex Nut is a high-quality, general-purpose fastener engineered for strength and durability. Constructed from medium carbon steel and finished in plain (uncoated) form, this nut is built to meet ASTM A563 Grade A standards—making it ideal for residential, structural, and light-duty mechanical applications.\u003c\/p\u003e\n\n\u003ch2\u003eVersatile Carbon Steel Heavy Hex Nut for Light-Duty Construction\u003c\/h2\u003e\n\n\u003cp\u003eThis coarse-threaded nut features a 1\/4\" diameter with 20 threads per inch (TPI) and a larger body than standard hex nuts, providing improved wrench grip and bearing surface. Designed for compatibility with A307 threaded rod, Grade 55 rod, or general-purpose bolts, it excels in non-critical applications where value and function matter. Its plain finish is perfect for weldable assemblies or controlled environments where additional coatings aren’t required.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made from medium carbon steel for strength in everyday fastening needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\/TPI:\u003c\/strong\u003e Coarse thread with 20 TPI for easy alignment and secure hold.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy Hex Design:\u003c\/strong\u003e Oversized profile delivers greater surface contact and load-bearing capacity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Plain (uncoated) surface ideal for welding or indoor use without exposure to elements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard Compliance:\u003c\/strong\u003e Conforms to ASTM A563 Grade A requirements for dimensional and mechanical performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGeneral residential or commercial construction\u003c\/li\u003e\n  \u003cli\u003eLight-duty machinery and framing connections\u003c\/li\u003e\n  \u003cli\u003eLow-stress structural assemblies and utility builds\u003c\/li\u003e\n  \u003cli\u003eFabrication projects involving weldable components\u003c\/li\u003e\n  \u003cli\u003eDIY builds, brackets, and bolt-based repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePair with 1\/4\"-20 A307 or Grade 55 threaded rod or bolts for proper thread engagement.\u003c\/li\u003e\n  \u003cli\u003eUse a standard hex socket or wrench to apply even torque during tightening.\u003c\/li\u003e\n  \u003cli\u003eClean the nut and mating threads before installation, especially if welding is planned.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated Items:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/a307-threaded-rod\"\u003eA307 Threaded Rod\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/grade-55-threaded-rod\"\u003eGrade 55 Threaded Rod\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/plain-finish-threaded-rod\"\u003ePlain Finish Threaded Rod\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/hot-dip-galvanized-threaded-rod\"\u003eHot Dip Galvanized Threaded Rod\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eCalifornia Residents: \u003ca style=\"color: black;\" href=\"\/pages\/prop-65\" target=\"_blank\"\u003eWARNING\u003c\/a\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"US Cargo Control","offers":[{"title":"Default Title","offer_id":44428583338029,"sku":"HNA563A-14","price":0.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0283\/2229\/9949\/files\/HNA563A-14-1-1600x1600_1cc35931-f03f-4963-8e7b-c5848b988227.jpg?v=1768411612"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0283\/2229\/9949\/collections\/FP-Heavy-Hex-Nuts.jpg?v=1767880247","url":"https:\/\/www.uscargocontrol.com\/collections\/heavy-hex-nuts.oembed","provider":"US Cargo Control","version":"1.0","type":"link"}