{"product_id":"starrett-56499-a2-tool-steel-flat-stock-5-8-x-5-8-x-18-in","title":"Starrett 56499 A2 Tool Steel Flat Stock 5\/8 X 5\/8 X 18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 56499 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who need a reliable, ready-to-machine blank. Measuring 0.625 inches thick by 0.625 inches wide by 18 inches long and weighing 1.99 pounds, this bar is ground to tight tolerances that reduce setup time at the bench or mill. Thickness and squareness are held to plus or minus 0.001 inches, while width tolerance is held to plus 0.000 to 0.005 inches. A2 tool steel responds predictably to air-hardening heat treatment, making it a standard choice for punches, dies, gages, and similar precision tooling components.\u003c\/p\u003e\n\u003cp\u003eThis flat stock is suited to job shops, tool rooms, and maintenance departments that fabricate or repair tooling in-house. The 18-inch length provides enough stock for a single long component or multiple shorter blanks cut from one piece. A2 material is commonly chosen for applications requiring moderate toughness combined with good wear resistance after hardening, such as blanking dies, forming tools, and cutting blades. Licensed machinists and toolmakers are the primary trade installing or machining this stock.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI A2 air-hardening tool steel construction provides consistent hardening response and good dimensional stability\u003c\/li\u003e\n  \u003cli\u003eThickness tolerance of plus or minus 0.001 inches reduces hand-fitting time during tooling fabrication\u003c\/li\u003e\n  \u003cli\u003eWidth tolerance of plus 0.000 to 0.005 inches ensures predictable fit in close-clearance applications\u003c\/li\u003e\n  \u003cli\u003eSquare tolerance of plus or minus 0.001 inches supports accurate layout and reference grinding\u003c\/li\u003e\n  \u003cli\u003e18-inch length with a plus 0.250-inch length tolerance provides adequate stock for facing and finishing to final length\u003c\/li\u003e\n  \u003cli\u003e1.99-pound weight suits single-bar handling without additional lifting equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style precision ground flat stock blank for use in general tool and die fabrication where AISI A2 air-hardening tool steel is specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMachining and heat treatment of tool steel flat stock should be performed by qualified toolmakers or machinists familiar with A2 material requirements. Secure the workpiece properly in a vise or fixture before cutting, grinding, or milling to prevent movement and maintain tolerance. Heat treatment operations, including hardening and tempering, should follow the material manufacturer guidelines and be conducted in controlled furnace environments. Allow the bar to reach ambient temperature before precision measurement to avoid thermal expansion errors.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tool Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Specification\u003c\/strong\u003e: AISI A2 Air-Hardening\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness Tolerance\u003c\/strong\u003e: plus or minus 0.001 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: plus 0.000 to 0.005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.250 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: plus or minus 0.001 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.99 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31231200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 56499\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542626828594,"sku":"56499","price":209.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_bae3a2b1-a7c5-427f-b9e5-581e04623079.jpg?v=1785903966","url":"https:\/\/voomisupply.com\/products\/starrett-56499-a2-tool-steel-flat-stock-5-8-x-5-8-x-18-in","provider":"Voomi Supply","version":"1.0","type":"link"}