{"product_id":"starrett-57047-o1-oil-hardening-flat-stock-0-75x2-5x18-in","title":"Starrett 57047 O1 Oil-hardening Flat Stock 0.75x2.5x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 57047 is an O1 oil-hardening flat stock bar made from AISI Type O1 tool steel. It measures 0.75 inches thick, 2.5 inches wide, and 18 inches long, and weighs 9.56 pounds. O1 tool steel is a general-purpose oil-hardening grade known for its machinability in the annealed state and its ability to achieve high hardness after heat treatment. This flat stock is used by tool and die makers, machinists, and metalworking professionals to fabricate dies, punches, gauges, and custom tooling. Tight dimensional tolerances and a squared edge profile make it ready for layout and machining directly from stock.\u003c\/p\u003e\n\u003cp\u003eThis flat stock is suited for job shop, toolroom, and production machining environments where O1 tool steel is specified. It is a standard choice for short-run die work, fixture components, and precision tooling blanks. The 18-inch length provides enough material for multiple parts from a single piece. Edge squareness is held to 0.003 inches per inch across all edges, supporting accurate layout without additional grinding on the reference faces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI Type O1 oil-hardening tool steel for reliable heat-treat response and high as-hardened wear resistance\u003c\/li\u003e\n  \u003cli\u003eThickness tolerance of +0.0100 to +0.0150 inches for consistent stock removal allowance\u003c\/li\u003e\n  \u003cli\u003eWidth tolerance of +0.0100 to +0.0150 inches\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of +0.2500 inches\u003c\/li\u003e\n  \u003cli\u003eEdge squareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n  \u003cli\u003eSingle-piece package quantity with no minimum order above one piece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard O1 oil-hardening tool steel flat stock blank for toolroom and die-making applications requiring AISI Type O1 material in 0.75 inch by 2.5 inch cross-section.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMachining and heat treatment of O1 tool steel should be performed by qualified machinists and tool and die makers familiar with tool steel handling. The material is supplied in the annealed condition and requires oil quenching during hardening — follow the steel supplier or heat treater recommendations for soak temperature and quench procedure. Use appropriate cutting fluids and carbide or high-speed steel tooling when machining. Handle with care after hardening, as hardened tool steel is brittle and susceptible to cracking from impact or thermal shock.\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 Type O1 Oil Hardening\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2.5 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: +0.0100 to +0.0150 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: +0.0100 to +0.0150 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: +0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEdge Squareness\u003c\/strong\u003e: 0.003 inches per inch, all edges\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 9.56 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 57047\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540497989938,"sku":"57047","price":356.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_d5c4f607-2530-4193-9dc7-2d2f6977b93b.jpg?v=1785856591","url":"https:\/\/voomisupply.com\/products\/starrett-57047-o1-oil-hardening-flat-stock-0-75x2-5x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}