{"product_id":"simpson-atrm3-4-atrm-3-8-in-x-48-in-all-thread-rod-grade-55","title":"Simpson ATRM3-4 3\/8 in. x 48 in. All-Thread Rod, Grade 55 Medium-Strength","description":"\u003cdiv\u003e\n \u003cp\u003eThe \u003cstrong\u003eSimpson Strong-Tie ATRM3-4 All-Thread Rod\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. Manufactured by \u003cstrong\u003eSimpson Strong-Tie\u003c\/strong\u003e, this 3\/8 in. x 48 in. Grade 55 threaded rod delivers a continuous and reliable load path from roof to foundation - making it a critical component in continuous rod tiedown systems for shearwall overturning restraint and uplift restraint systems for roofs. Its versatility also extends to use as an adhesive anchor rod, giving contractors and engineers a multi-application fastening solution in a single precut length.\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 - arrives ready to install with no cutting required on the jobsite, saving time during structural assembly\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrade 55 specification (ASTM A36; Fy = 55 ksi, Fu = 75 ksi)\u003c\/strong\u003e - delivers the tensile and yield strength required for engineered seismic and wind resistance applications\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUNC Class 2A thread specification\u003c\/strong\u003e - ensures consistent thread form and fit for compatibility with standard nuts, couplers, and tiedown hardware\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUncoated black steel construction\u003c\/strong\u003e - provides a clean, consistent surface suitable for interior structural use and adhesive anchor applications\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e3\/8 in. rod diameter\u003c\/strong\u003e - sized for use within continuous rod tiedown and uplift restraint systems where precise dimensional compliance is required\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFully threaded along entire 48 in. length\u003c\/strong\u003e - allows positioning and connection at any point along the rod, maximizing installation flexibility in shearwall and roof uplift assemblies\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhy This Product\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eDesigned specifically as a tension transfer element for seismic and wind force resistance - this rod is engineered to perform where structural load path continuity from roof to foundation is a code requirement, not just a preference.\u003c\/li\u003e\n \u003cli\u003eThe precut 48 in. length reduces field fabrication time and helps eliminate cut-length errors during installation in continuous rod tiedown systems or uplift restraint assemblies.\u003c\/li\u003e\n \u003cli\u003eGrade 55 steel with ASTM A36 material compliance meets the strength specifications demanded by structural engineers designing shearwall overturning restraint systems, reducing the need for substitution approvals.\u003c\/li\u003e\n \u003cli\u003eMulti-application capability - functions in continuous rod tiedown systems, roof uplift restraint systems, and as an adhesive anchor rod - making it a single stocking item that serves multiple structural needs on the same project.\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 ATRM3-4\u003c\/li\u003e\n\n \u003cli\u003e\n\u003cstrong\u003eRod Diameter:\u003c\/strong\u003e 3\/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\u003eThread Type:\u003c\/strong\u003e UNC Class 2A\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrade:\u003c\/strong\u003e Grade 55\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial Standard:\u003c\/strong\u003e ASTM A36; Fy = 55 ksi \u0026amp; 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\u003eProduct Class:\u003c\/strong\u003e Threaded Rod\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 structural assemblies\u003c\/li\u003e\n \u003cli\u003eAdhesive anchor rod applications\u003c\/li\u003e\n \u003cli\u003eStructural systems designed to resist seismic and 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 applications is the ATRM3-4 designed for?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM3-4 is designed as a tension transfer element for use in structural systems that resist seismic and wind forces. It is specifically suited for continuous rod tiedown systems providing shearwall overturning restraint, uplift restraint systems for roofs, and adhesive anchor rod applications.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat are the material strength properties of this all-thread rod?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThis rod meets Grade 55 specifications with ASTM A36 material compliance - Fy = 55 ksi (yield strength) and Fu = 75 ksi (ultimate tensile strength). The thread form follows UNC Class 2A specification.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eIs this rod precut or does it require field cutting?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM3-4 is precut to 48 in. (4 ft.) for convenience. No field cutting is required, allowing for faster and more accurate installation in tiedown and uplift restraint assemblies.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat is the finish on this threaded rod, and is it coated?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM3-4 is manufactured from uncoated black steel with no protective coating applied. This makes it well suited for interior structural applications and adhesive anchor installations where an uncoated surface is acceptable or preferred.\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/div\u003e","brand":"SIMPSON","offers":[{"title":"Default Title","offer_id":48085361295590,"sku":"ATRM3-4","price":4.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0398\/5188\/4705\/files\/ATRM4_png.jpg?v=1785362760","url":"https:\/\/factorydirectsupply.com\/products\/simpson-atrm3-4-atrm-3-8-in-x-48-in-all-thread-rod-grade-55","provider":"FactoryDirectSupply.com","version":"1.0","type":"link"}