{"product_id":"starrett-54447-o1-tool-steel-flat-stock-0-5x4x36-in","title":"Starrett 54447 O1 Tool Steel Flat Stock 0.5x4x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54447 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 0.5 inches thick, 4 inches wide, and 36 inches long and weighs 20.4 pounds. The O1 grade offers good machinability in the annealed state and responds well to oil quenching for hardening, making it a go-to material for punches, dies, gauges, and cutting tools. Tight dimensional tolerances are held throughout: thickness tolerance is plus or minus 0.001 inches, length tolerance is plus 0.015 inches, and width tolerance runs from 0 to minus 0.005 inches.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for tool and die shops, maintenance machining operations, and precision fabrication environments where consistent stock dimensions reduce setup time. It is appropriate for applications requiring a machinable blank that will be finish-ground and hardened to final size. Typical users include tool and die makers, machinists, and industrial maintenance technicians working in job shop or production environments. The 36-inch length provides a full working bar that can be cut down to individual blanks as required by the job.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel — machines well in the annealed state and hardens predictably with an oil quench\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for consistent stock removal during grinding\u003c\/li\u003e\n\u003cli\u003eWidth tolerance from 0 to minus 0.005 inches supports close-tolerance blank preparation\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch across all edges\u003c\/li\u003e\n\u003cli\u003e36-inch bar length provides multiple blanks from a single piece of stock\u003c\/li\u003e\n\u003cli\u003eWeighs 20.4 pounds — suitable for heavy-duty tooling blanks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard O1 oil-hardening tool steel flat stock for general toolmaking, die making, and precision machining applications where AISI Type O1 material specification is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting and machining of tool steel flat stock should be performed by qualified machinists using appropriate cutting fluids and tooling rated for tool steel. Always follow established heat-treat procedures and use proper personal protective equipment when hardening and quenching. Material should be stored flat to prevent warpage and kept dry to avoid surface oxidation prior to use.\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: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 4 inches\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: Edge: All 0.003 inches per inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 20.4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31231200\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: 54447\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542249865522,"sku":"54447","price":708.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_b852fe3e-83f1-4ca6-8317-2114a2b4e0d6.jpg?v=1785896380","url":"https:\/\/voomisupply.com\/products\/starrett-54447-o1-tool-steel-flat-stock-0-5x4x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}