{"product_id":"simpson-atrm4-4-atrm-1-2-in-x-48-in-all-thread-rod-grade-55","title":"Simpson ATRM4-4 1\/2 in. x 48 in. All-Thread Rod, Grade 55 Medium-Strength","description":"\u003cdiv\u003e\n \u003cp\u003eThe \u003cstrong\u003eSimpson Strong-Tie ATRM 1\/2 in. x 48 in. All-Thread Rod, Grade 55\u003c\/strong\u003e is a fully threaded structural rod engineered by \u003cstrong\u003eSimpson Strong-Tie\u003c\/strong\u003e to serve as a tension transfer element in systems designed to resist seismic and wind forces. Built from uncoated black steel to ASTM A36 material standards with a minimum yield strength of 55 ksi, this precut 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, uplift restraint systems for roofs, and adhesive anchor rod 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 on-site cutting, saving time and reducing material waste during structural assembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMeets Grade 55 specifications (ASTM A36; Fy = 55 ksi, Fu = 75 ksi)\u003c\/strong\u003e - delivers the high tensile and yield strength required for seismic and wind force resistance in structural tiedown systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUNC Class 2A thread specification\u003c\/strong\u003e - ensures precise, standardized thread fit for compatibility with nuts, couplers, and take-up devices used in continuous rod tiedown assemblies.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUncoated black steel construction\u003c\/strong\u003e - a fully threaded profile along the entire 48 in. length allows flexible positioning and versatile use across multiple structural applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e1\/2 in. rod diameter\u003c\/strong\u003e - sized for use in common Strong-Rod tiedown system configurations, providing the load-carrying capacity suited to light-frame wood construction overturning restraint.\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 resistance, this all-thread rod supports a continuous load path from roof to foundation - addressing one of the most critical requirements in structural shearwall design.\u003c\/li\u003e\n \u003cli\u003eThe precut 48 in. length eliminates field cutting and speeds up installation in continuous rod tiedown systems and uplift restraint applications, reducing labor time on the job site.\u003c\/li\u003e\n \u003cli\u003eGrade 55 ASTM A36 steel with Fy = 55 ksi and Fu = 75 ksi ensures the rod meets the structural performance demands of engineered tiedown systems without overspecifying material cost.\u003c\/li\u003e\n \u003cli\u003eThe fully threaded design across the entire rod length means it can also serve as an adhesive anchor rod, giving contractors a single versatile product useful across multiple applications 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 ATRM4-4\u003c\/li\u003e\n\n \u003cli\u003e\n\u003cstrong\u003eRod Diameter:\u003c\/strong\u003e 1\/2 in.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRod Length:\u003c\/strong\u003e 48 in.\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\u003eThread Specification:\u003c\/strong\u003e UNC Class 2A\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial Standard:\u003c\/strong\u003e ASTM A36\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eYield Strength (Fy):\u003c\/strong\u003e 55 ksi\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTensile Strength (Fu):\u003c\/strong\u003e 75 ksi\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 roofs\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 is this all-thread rod used for?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe Simpson Strong-Tie ATRM4-4 is used as a tension transfer element in structural systems designed to resist seismic and wind forces. Primary applications include continuous rod tiedown systems for shearwall overturning restraint, uplift restraint systems for roofs, and use as an adhesive anchor rod in various construction scenarios.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat are the material and strength specifications for this threaded rod?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThis rod is manufactured from ASTM A36 uncoated black steel and meets Grade 55 specifications, with a minimum yield strength (Fy) of 55 ksi and a minimum tensile strength (Fu) of 75 ksi. The thread profile follows UNC Class 2A specification for precise, standardized fit with compatible hardware.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eIs this rod precut or does it need to be cut to length on site?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM4-4 comes precut to a length of 48 in. with a diameter of 1\/2 in., so no on-site cutting is required. This makes it ready for immediate use in continuous rod tiedown systems and other structural applications without additional preparation.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eDoes this threaded rod have any coating or corrosion protection?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eNo. The ATRM4-4 is uncoated black steel with no applied finish or corrosion-resistant coating. It is intended for use in dry or protected interior structural applications typical of continuous rod tiedown and overturning restraint systems in wood-frame construction.\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/div\u003e","brand":"SIMPSON","offers":[{"title":"Default Title","offer_id":48085361328358,"sku":"ATRM4-4","price":8.36,"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-atrm4-4-atrm-1-2-in-x-48-in-all-thread-rod-grade-55","provider":"FactoryDirectSupply.com","version":"1.0","type":"link"}