{"product_id":"hex-bolt-3-8-16-x-4-290-001441","title":"EZ Loader 3\/8\"-16 x 4\" Hex Bolt – 290-001441","description":"\u003cdiv style=\"line-height: 1.4; color: #263238;\"\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eThe \u003cstrong\u003e3\/8\"-16 x 4\" zinc-plated hex bolt, EZ Loader part 290-001441\u003c\/strong\u003e, is an OEM replacement fastener for compatible boat trailer hardware assemblies. This hex head bolt has a 3\/8-inch coarse thread with 16 threads per inch and a nominal 4-inch length. It is listed as Grade 5 hardware and should be matched to the original bolt specification before installation.\u003c\/p\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eKey Features\u003c\/h2\u003e\n\u003cul style=\"margin: 3px 0 8px; padding-left: 22px;\"\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eEZ Loader OEM replacement hardware, part 290-001441.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003e3\/8\"-16 UNC coarse-thread size.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003e4-inch nominal bolt length.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eHex head design for wrench or socket installation.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eZinc-plated steel finish for corrosion protection.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eGrade 5 specification as listed; verify head markings before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eProduct Details\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 5px 0 10px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\" style=\"background: #12344d; color: #ffffff; border: 1px solid #b8c5ce; padding: 9px; text-align: left;\"\u003eProduct Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 38%; background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eEZ Loader\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003ePart Number \/ MPN\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003e290-001441\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003ePart Type\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eHex Head Bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003e3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eThread Pitch\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003e16 TPI, UNC coarse thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eNominal Length\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003e4\" (measured from beneath the head)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eHead Type\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eExternal Hex Head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eGrade\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eGrade 5 (listed specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eMaterial \/ Finish\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eZinc-plated steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eCompatible EZ Loader trailer fastening assemblies requiring this specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eQuantity Included\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eOne hex head bolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eNuts \/ Washers\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eNot included unless separately specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f8fbfc; border: 1px solid #b8c5ce; padding: 8px; font-weight: bold;\"\u003eImportant Fitment Note\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #b8c5ce; padding: 8px;\"\u003eMatch thread, length, grade, grip requirements and original application.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eUnderstanding the Bolt Size\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eThe designation \u003cstrong\u003e3\/8\"-16 x 4\"\u003c\/strong\u003e identifies three important dimensions: a nominal 3\/8-inch bolt diameter, 16 threads per inch and a 4-inch nominal length measured from the underside of the hex head to the bolt tip. This is a coarse-thread fastener, not a 3\/8\"-24 fine-thread bolt.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eBolt length alone does not establish compatibility. The unthreaded shank length, thread engagement and mounting arrangement must also be suitable for the original assembly.\u003c\/p\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eGrade 5 and Zinc-Plated Finish\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eGrade 5 is a recognized SAE bolt-strength classification. If this specification is confirmed for part 290-001441, the replacement should maintain the required grade rather than being substituted with an unidentified fastener.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eThe zinc-plated finish provides a protective coating over the steel. It helps resist corrosion during ordinary trailer service but does not make the bolt stainless steel or eliminate the need for inspection, especially after saltwater exposure.\u003c\/p\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eCompatible Trailer Applications\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eThis bolt may be appropriate for compatible EZ Loader trailer brackets or other hardware assemblies specifically calling for part 290-001441 or the same approved fastener specification. Its exact installation locations depend on trailer model and factory configuration.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eDo not assume the bolt fits every frame, suspension, roller, bunk or winch-mount connection simply because the diameter and length appear similar.\u003c\/p\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eRelated Hardware\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eSome installations require a matching 3\/8\"-16 nut, locknut or washer. These components must be selected according to the original assembly requirements and are not included with this individual bolt unless specifically stated.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eEZ Loader also uses different bolt lengths, diameters, thread pitches and finishes throughout its trailer product lines. Compare the original part number and hardware specifications before selecting an alternative.\u003c\/p\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eInstallation and Fitment Cautions\u003c\/h2\u003e\n\u003cul style=\"margin: 3px 0 8px; padding-left: 22px;\"\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eVerify the original fastener's part number, thread size, length and strength grade.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eCheck whether the original installation requires a particular unthreaded grip length.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eUse the correct matching nut or locking hardware where specified.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eInspect mounting holes, brackets and contact surfaces for damage or corrosion.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eFollow the applicable factory tightening specifications; no universal torque value is provided for this part.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 4px;\"\u003eDo not substitute a lower-grade or different-thread fastener in a load-bearing assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eNeed Help Identifying Your Trailer Hardware?\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eEZLoaderParts411 can help compare replacement hardware using your trailer VIN, year and model, photographs of the mounting location, and measurements of the original fastener. Providing the factory part number is the best starting point when available.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eContact our parts team at \u003cstrong\u003einfo@411Marine.com\u003c\/strong\u003e. We are located in Hardeeville, South Carolina.\u003c\/p\u003e\n\u003ch2 style=\"margin: 14px 0 5px;\"\u003eIndependent EZ Loader Parts Dealer Notice\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eEZLoaderParts411 is an EZ Loader OEM replacement parts supplier owned and operated by 411MarineCom, Inc., part of the 411-Trailers Group and the 411Marine family of businesses, serving customers since 1998 from Hardeeville, South Carolina.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003e411MarineCom (\u003ca href=\"https:\/\/ezloadertrailers411.com\/\" target=\"_blank\" title=\"High Volume Boat Trailer Dealer\" rel=\"noopener\"\u003eEZLoaderTrailers411\u003c\/a\u003e) is a high-volume independent EZ Loader trailer dealer and direct-to-factory source for new EZ Loader marine boat trailers, OEM replacement parts, and fitment support.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 6px;\"\u003eWe are a dealer resource, not the manufacturer. Our team helps previous trailer customers and new customers identify the correct EZ Loader parts using trailer VIN details, photos, measurements, real trailer comparisons, hands-on parts experience, publicly available resources, our websites, and direct customer conversations whenever possible.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"EZ Loader","offers":[{"title":"Default Title","offer_id":52897102528877,"sku":"290-001441","price":5.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/3761\/6493\/files\/EZLoader001441hexheadbolt3-8-16tpix4inTopView.jpg?v=1778175580","url":"https:\/\/ezloaderparts411.com\/products\/hex-bolt-3-8-16-x-4-290-001441","provider":"EZLoaderParts411.com","version":"1.0","type":"link"}