{"product_id":"simpson-atrm9-4-atrm-1-1-8-in-x-48-in-all-thread-rod-grade-55","title":"Simpson ATRM9-4 1-1\/8 in. x 48 in. All-Thread Rod, Grade 55 Medium-Strength","description":"\u003cdiv\u003e\n \u003cp\u003eThe \u003cstrong\u003eSimpson Strong-Tie ATRM 1-1\/8 in. x 48 in. All-Thread Rod, Grade 55\u003c\/strong\u003e is a fully threaded steel rod engineered as a tension transfer element for structural systems designed to resist seismic and wind forces. Acting as a continuous and reliable load path from roof to foundation, this all-thread rod is a core component in continuous rod tiedown systems for shearwall overturning restraint, uplift restraint systems for roofs, and can also be used as an adhesive anchor rod in a range of structural applications.\u003c\/p\u003e\n\n \u003ch3\u003eKey Features\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrecut 48 in. length\u003c\/strong\u003e - ready to install without field cutting, saving time and reducing material waste on the job site.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrade 55 specification (ASTM A36; Fy = 55 ksi and Fu = 75 ksi)\u003c\/strong\u003e - delivers verified yield and tensile strength for dependable performance in demanding seismic and wind-load applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUNC Class 2A thread specification\u003c\/strong\u003e - ensures consistent thread fit and compatibility with standard threaded hardware used in continuous rod tiedown and uplift restraint systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e1-1\/8 in. rod diameter\u003c\/strong\u003e - provides the cross-sectional capacity required for heavy-duty structural connections from roof to foundation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUncoated black steel finish\u003c\/strong\u003e - suited for interior structural installations where a coating is not required, keeping material costs straightforward.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMade in the United States\u003c\/strong\u003e - manufactured domestically to support consistent quality standards for structural applications.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhy This Product\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eDesigned specifically for continuous rod tiedown systems, this all-thread rod provides a reliable, uninterrupted load path from roof to foundation - addressing one of the most critical structural requirements in seismic and high-wind construction zones.\u003c\/li\u003e\n \u003cli\u003eIts Grade 55 rating (ASTM A36; Fy = 55 ksi and Fu = 75 ksi) meets recognized structural specifications, giving engineers and inspectors a verifiable, code-supportable material standard.\u003c\/li\u003e\n \u003cli\u003eThe fully threaded design runs end to end, making it versatile across multiple applications - shearwall overturning restraint, roof uplift restraint, and adhesive anchor rod use - without requiring a special-order configuration.\u003c\/li\u003e\n \u003cli\u003ePrecut to 48 in. and ready to use out of the package, this rod reduces installation steps and helps keep structural framing projects on schedule.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eSpecifications\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Simpson Strong-Tie\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e ATRM9-4\u003c\/li\u003e\n\n \u003cli\u003e\n\u003cstrong\u003eProduct Class:\u003c\/strong\u003e Threaded Rod\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRod Diameter:\u003c\/strong\u003e 1-1\/8 in.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRod Length:\u003c\/strong\u003e 48 in.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrade:\u003c\/strong\u003e Grade 55\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eThread Specification:\u003c\/strong\u003e UNC Class 2A\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial Standard:\u003c\/strong\u003e ASTM A36; Fy = 55 ksi and Fu = 75 ksi\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Uncoated Steel\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Uncoated Steel\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProp 65:\u003c\/strong\u003e No\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eApproved Applications\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eContinuous rod tiedown systems for shearwall overturning restraint\u003c\/li\u003e\n \u003cli\u003eUplift restraint systems for roof applications\u003c\/li\u003e\n \u003cli\u003eAdhesive anchor rod applications\u003c\/li\u003e\n \u003cli\u003eStructural systems designed to resist seismic forces\u003c\/li\u003e\n \u003cli\u003eStructural systems designed to resist wind forces\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdl\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat structural systems is this all-thread rod designed to work with?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM9-4 is designed for use in structural systems that resist seismic and wind forces. It functions as a tension transfer element in continuous rod tiedown systems for shearwall overturning restraint, in uplift restraint systems for roofs, and can also be used as an adhesive anchor rod in other structural applications.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat material standard does this threaded rod meet?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThis rod meets Grade 55 specifications and conforms to ASTM A36 with a minimum yield strength of Fy = 55 ksi and a minimum tensile strength of Fu = 75 ksi. The thread form is UNC Class 2A, which ensures compatibility with standard structural threaded hardware.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eIs this rod fully threaded along its entire length?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eYes. The ATRM is a fully threaded rod - also referred to as an all-thread rod - meaning threads run the complete length of the 48 in. rod. This allows for flexible positioning and connection at any point along the rod within a structural assembly.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eDoes this rod have any protective coating?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eNo. The ATRM9-4 is uncoated black steel with no protective finish applied. It is suited for interior structural installations where an exterior coating is not required by the design.\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/div\u003e","brand":"SIMPSON","offers":[{"title":"Default Title","offer_id":48085361492198,"sku":"ATRM9-4","price":49.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0398\/5188\/4705\/files\/ATRM_1-1-8.png?v=1785360273","url":"https:\/\/factorydirectsupply.com\/products\/simpson-atrm9-4-atrm-1-1-8-in-x-48-in-all-thread-rod-grade-55","provider":"FactoryDirectSupply.com","version":"1.0","type":"link"}