{"product_id":"simpson-atrm3-2-atrm-3-8-in-x-24-in-all-thread-rod-grade-55","title":"Simpson ATRM3-2 3\/8 in. x 24 in. All-Thread Rod, Grade 55 Medium-Strength","description":"\u003cdiv\u003e\n \u003cp\u003eThe \u003cstrong\u003eSimpson Strong-Tie ATRM 3\/8 in. x 24 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. Built to deliver 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 and in uplift restraint systems for roof applications. Its fully threaded design also makes it suitable for use as an adhesive anchor rod, giving contractors and engineers a versatile fastening solution across multiple structural applications.\u003c\/p\u003e\n\n \u003ch3\u003eKey Features\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrecut 24 in. length\u003c\/strong\u003e - ready to install straight out of the package, saving time on the jobsite and eliminating the need for on-site cutting or threading.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrade 55 specification (ASTM A36; Fy = 55 ksi, Fu = 75 ksi)\u003c\/strong\u003e - meets established structural strength thresholds, giving engineers confidence in load calculations for seismic and wind resistance applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUNC Class 2A thread specification\u003c\/strong\u003e - a standardized thread form that ensures proper fit and compatibility with standard nuts, couplers, and tiedown hardware used in continuous rod systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFully threaded (all-thread) construction\u003c\/strong\u003e - threads run the entire 24 in. length, allowing connection at any point along the rod and providing maximum flexibility during structural assembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUncoated black steel finish\u003c\/strong\u003e - suited for interior structural applications where the rod will be protected within wall assemblies, keeping material cost straightforward without unnecessary coating.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e3\/8 in. rod diameter\u003c\/strong\u003e - a commonly specified size for residential and light commercial tiedown systems, compatible with Simpson Strong-Tie tiedown hardware designed for this rod diameter.\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 proven, engineered solution for shearwall overturning restraint - a critical requirement in seismic and high-wind construction zones.\u003c\/li\u003e\n \u003cli\u003eThe fully threaded 24 in. length means no field threading is required, reducing labor time and the risk of threading errors that can compromise load-path integrity.\u003c\/li\u003e\n \u003cli\u003eWith Grade 55 strength ratings (Fy = 55 ksi, Fu = 75 ksi) backed by ASTM A36 compliance, structural engineers can use this rod with confidence in code-compliant designs for both seismic and wind uplift restraint.\u003c\/li\u003e\n \u003cli\u003eVersatility across applications - from shearwall tiedown systems to roof uplift restraint to adhesive anchor rod use - means this single rod size covers a wide range of structural connection 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 ATRM3-2\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 3\/8 in.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRod Length:\u003c\/strong\u003e 24 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 system for shearwall overturning restraint\u003c\/li\u003e\n \u003cli\u003eUplift restraint system for roof applications\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 systems is the ATRM3-2 all-thread rod designed for?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM3-2 is designed for use as a tension transfer element in structural systems that resist seismic and wind forces. It is used in continuous rod tiedown systems for shearwall overturning restraint, in uplift restraint systems for roofs, and can also serve as an adhesive anchor rod in a variety of other applications.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eDoes this rod come precut or does it need to be cut to length on the jobsite?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM3-2 is precut to 24 in. for convenience. No field cutting or threading is required, making it ready for immediate use in tiedown and uplift restraint assemblies.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat are the material strength ratings for this all-thread rod?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM3-2 meets Grade 55 specifications and conforms to ASTM A36, with a minimum yield strength (Fy) of 55 ksi and a minimum tensile strength (Fu) of 75 ksi. The thread form follows UNC Class 2A specifications.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eIs this rod coated or treated for corrosion resistance?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eNo - the ATRM3-2 is made from uncoated black steel. It is intended for use in interior structural applications such as within wall assemblies where it will be protected from moisture and the elements.\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/div\u003e","brand":"SIMPSON","offers":[{"title":"Default Title","offer_id":48085360476390,"sku":"ATRM3-2","price":2.44,"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-atrm3-2-atrm-3-8-in-x-24-in-all-thread-rod-grade-55","provider":"FactoryDirectSupply.com","version":"1.0","type":"link"}