{"product_id":"simpson-atrm6-4-atrm-3-4-in-x-48-in-all-thread-rod-grade-55","title":"Simpson ATRM6-4 3\/4 in. x 48 in. All-Thread Rod, Grade 55 Medium-Strength","description":"\u003cdiv\u003e\n \u003cp\u003eThe \u003cstrong\u003eSimpson Strong-Tie ATRM 3\/4 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. By providing a continuous and reliable load path from roof to foundation, this all-thread rod is a critical component in continuous rod tiedown systems for shearwall overturning restraint and in uplift restraint systems for roof applications. It can also serve as an adhesive anchor rod, making it a versatile choice for a wide range of structural fastening and anchoring needs.\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, eliminating the need for field cutting and saving time on the job site.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrade 55 specification (ASTM A36; Fy = 55 ksi, Fu = 75 ksi)\u003c\/strong\u003e - delivers proven tensile and yield strength required for engineered shearwall and uplift restraint applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUNC Class 2A thread specification\u003c\/strong\u003e - ensures compatibility with standard nuts, couplers, and bearing plates used in continuous rod tiedown systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e3\/4 in. rod diameter\u003c\/strong\u003e - sized for high-load structural tiedown applications where robust tension transfer is required 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 exposure to moisture or corrosive environments is not a factor.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFully threaded along entire length\u003c\/strong\u003e - allows connection hardware to be positioned anywhere along the rod, giving installers flexible placement options for tiedown 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-resistant structures, this threaded rod provides the continuous load path from roof to foundation that engineered tiedown systems demand.\u003c\/li\u003e\n \u003cli\u003eWith a precut 48 in. length and full UNC Class 2A threading, the rod installs directly into continuous rod tiedown systems and uplift restraint systems without additional preparation.\u003c\/li\u003e\n \u003cli\u003eThe Grade 55 rating (Fy = 55 ksi, Fu = 75 ksi) meets the strength requirements for shearwall overturning restraint applications, giving engineers and contractors confidence in the structural performance.\u003c\/li\u003e\n \u003cli\u003eIts versatility extends beyond tiedown systems - the ATRM can also function as an adhesive anchor rod, making it useful across multiple structural anchoring 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 ATRM6-4\u003c\/li\u003e\n\n \u003cli\u003e\n\u003cstrong\u003eRod Diameter:\u003c\/strong\u003e 3\/4 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 Specification:\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 system for shearwall overturning restraint\u003c\/li\u003e\n \u003cli\u003eUplift restraint system for roof applications\u003c\/li\u003e\n \u003cli\u003eAdhesive anchor rod installations\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 the ATRM6-4 all-thread rod designed for?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM6-4 is designed as a tension transfer element for structural systems that resist seismic and wind forces. It is used 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 other applications.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat are the material strength properties of this threaded rod?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM6-4 meets Grade 55 specifications per ASTM A36, with a minimum yield strength (Fy) of 55 ksi and a minimum tensile strength (Fu) of 75 ksi. The thread specification is UNC Class 2A.\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 ATRM6-4 comes precut to a 3\/4 in. diameter by 48 in. length, so no field cutting is required. The fully threaded design allows hardware to be positioned anywhere along the rod during installation.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eDoes the uncoated finish affect where this rod can be used?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM6-4 features an uncoated black steel finish with no protective coating applied. It is best suited for interior structural installations where direct exposure to moisture or corrosive conditions is not expected.\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/div\u003e","brand":"SIMPSON","offers":[{"title":"Default Title","offer_id":48085361393894,"sku":"ATRM6-4","price":19.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0398\/5188\/4705\/files\/ATRM_1.png?v=1785360272","url":"https:\/\/factorydirectsupply.com\/products\/simpson-atrm6-4-atrm-3-4-in-x-48-in-all-thread-rod-grade-55","provider":"FactoryDirectSupply.com","version":"1.0","type":"link"}