{"product_id":"simpson-atrm8-1-atrm-1-in-x-12-in-all-thread-rod-grade-55","title":"Simpson ATRM8-1 1 in. x 12 in. All-Thread Rod, Grade 55 Medium-Strength","description":"\u003cdiv\u003e\n \u003cp\u003eThe \u003cstrong\u003eSimpson Strong-Tie ATRM8-1 All-Thread Rod\u003c\/strong\u003e is a fully threaded, precut Grade 55 steel rod engineered as a tension transfer element for structural systems that must resist seismic and wind forces. Measuring 1 in. in diameter and 12 in. in length, this uncoated black steel 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 roof applications, and adhesive anchor installations.\u003c\/p\u003e\n\n \u003ch3\u003eKey Features\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003ePrecut to 12 in. length - ready to install right out of the package, saving time on the job site without the need to cut or measure rod stock\u003c\/li\u003e\n \u003cli\u003eMeets Grade 55 specifications - delivers higher minimum yield strength (55 ksi) compared to standard Grade 36 requirements, supporting demanding structural load calculations\u003c\/li\u003e\n \u003cli\u003eUNC Class 2A thread specification - ensures consistent, reliable thread engagement with nuts and couplers used in continuous rod tiedown assemblies\u003c\/li\u003e\n \u003cli\u003eASTM A36 material; Fy = 55 ksi and Fu = 75 ksi - provides verified, code-compliant tensile and yield values for structural design and engineering submittals\u003c\/li\u003e\n \u003cli\u003eUncoated black steel finish - suited for interior and protected structural applications where a bare steel surface is acceptable for the installed environment\u003c\/li\u003e\n \u003cli\u003e1 in. rod diameter - matches standard sizing requirements for strong-rod tiedown system hardware including bearing plates, rod couplers, and take-up devices\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-resisting systems, this all-thread rod integrates directly into a continuous load path from roof to foundation - a critical requirement in engineered shearwall and uplift restraint designs.\u003c\/li\u003e\n \u003cli\u003eThe precut 12 in. length eliminates on-site cutting and reduces material waste, making it a practical choice when shorter rod segments are required within a continuous rod tiedown assembly.\u003c\/li\u003e\n \u003cli\u003eGrade 55 strength ratings (Fy = 55 ksi, Fu = 75 ksi) with ASTM A36 compliance give engineers and inspectors the documented material properties needed to satisfy code requirements for structural rod systems.\u003c\/li\u003e\n \u003cli\u003eFull-thread (all-thread) construction along the entire 12 in. length means the rod can be cut to any position within the threaded section without losing thread engagement - adding flexibility for adhesive anchor rod applications and other structural uses.\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 ATRM8-1\u003c\/li\u003e\n\n \u003cli\u003e\n\u003cstrong\u003eRod Diameter:\u003c\/strong\u003e 1 in.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRod Length:\u003c\/strong\u003e 12 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\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 applications\u003c\/li\u003e\n \u003cli\u003eAdhesive anchor rod installations\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 is the difference between Grade 55 and standard Grade 36 for all-thread rod?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eGrade 55 specifies a minimum yield strength of 55 ksi and a minimum tensile strength of 75 ksi per ASTM A36 requirements. This is higher than the 36 ksi yield threshold associated with standard Grade 36 designations, making Grade 55 rod appropriate for structural tiedown systems where higher tension capacity is required for seismic and wind load path designs.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eCan the ATRM8-1 be used as an adhesive anchor rod?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eYes. The marketing description for this product explicitly lists use as an adhesive anchor rod as one of the approved applications, in addition to its primary role in continuous rod tiedown systems for shearwall overturning restraint and roof uplift restraint.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eWhat thread form does the ATRM8-1 use?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM8-1 uses a UNC (Unified National Coarse) Class 2A thread specification. This is a standard thread form widely used in structural rod hardware, ensuring compatibility with corresponding nuts, couplers, and take-up devices commonly used in rod tiedown assemblies.\u003c\/dd\u003e\n \u003cdt\u003e\u003cstrong\u003eIs the ATRM8-1 suitable for exterior or treated lumber applications?\u003c\/strong\u003e\u003c\/dt\u003e\n \u003cdd\u003eThe ATRM8-1 is made from uncoated black steel with no protective coating or finish applied. This makes it best suited for interior or protected structural applications. For environments with exposure to moisture, treated lumber, or corrosive conditions, a coated or corrosion-resistant rod option should be evaluated.\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/div\u003e","brand":"SIMPSON","offers":[{"title":"Default Title","offer_id":48085360148710,"sku":"ATRM8-1","price":9.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0398\/5188\/4705\/files\/ATRM_7-8.png?v=1785360272","url":"https:\/\/factorydirectsupply.com\/products\/simpson-atrm8-1-atrm-1-in-x-12-in-all-thread-rod-grade-55","provider":"FactoryDirectSupply.com","version":"1.0","type":"link"}