{"product_id":"starrett-54457-o1-tool-steel-flat-stock-9-16x1x36-in","title":"Starrett 54457 O1 Tool Steel Flat Stock 9\/16x1x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54457 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, jig fabrication, and precision machining applications. It measures 9\/16 inches thick, 1 inch wide, and 36 inches long, with a finished weight of 5.74 pounds. Manufactured to AISI Type O1 material specification, this flat stock ships in an annealed condition ready for machining, then hardens in oil quench to achieve the wear resistance and edge retention required for punches, dies, gauges, and cutting tools. Thickness tolerance is held to plus or minus 0.001 inches, giving machinists a consistent starting dimension with minimal material removal before finish grinding.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock in this size is commonly used in tool and die shops, maintenance departments, and prototype fabrication environments. The 36-inch bar length allows multiple shorter blanks to be cut from a single piece. Typical applications include die sections, form tools, drill jigs, fixture components, and hand tools requiring high hardness after heat treatment. This stock is worked by machinists and tool and die makers operating surface grinders, milling machines, and EDM equipment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel construction for predictable hardening response and minimal distortion\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for consistent pre-ground dimensions\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to minus 0.005 inches for close-fit applications\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.015 inches with no minus allowance\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eSingle 36-inch bar per package, sold individually\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard O1 oil-hardening tool steel flat bar suitable for general toolmaking and die making applications requiring AISI Type O1 material specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of tool steel should be performed by qualified tool and die makers or machinists familiar with O1 oil-hardening procedures. Always anneal or stress-relieve after rough machining before finish grinding. Oil quench heat treatment should follow the steel supplier's recommended procedures for AISI O1, and appropriate PPE must be worn during all heat treatment operations. Cutting and grinding operations generate fine steel particles and heat — use coolant and appropriate respiratory protection as required by shop safety standards.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 9\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 36 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: 0.000 to minus 0.005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquareness\u003c\/strong\u003e: 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 5.74 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 54457\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541229011250,"sku":"54457","price":212.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_de8bffa8-cdab-478e-94de-fd19956ce951.jpg?v=1785870339","url":"https:\/\/voomisupply.com\/products\/starrett-54457-o1-tool-steel-flat-stock-9-16x1x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}