{"product_id":"starrett-54236-o1-tool-steel-flat-stock-1-1-4x5x18-in","title":"Starrett 54236 O1 Tool Steel Flat Stock 1-1\/4x5x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54236 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 material specification, this flat stock measures 1-1\/4 inches thick, 5 inches wide, and 18 inches long, with a weight of 31.88 pounds. Thickness and squareness tolerances are held to plus or minus 0.001 inches, making it suitable for applications that require tight dimensional control before heat treatment. Machinists, tool and die makers, and precision fabricators work with this material when building cutting tools, gauges, punches, and similar hardened-steel components.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock is used across job shops, tool rooms, and production facilities wherever a readily machinable, oil-quench hardenable steel is required. This bar is appropriate for annealed stock removal, followed by heat treatment to achieve the hardness needed for tooling applications. Its larger cross-section makes it well suited for die blocks, wear plates, and blanks that require significant stock removal prior to finish grinding. This piece ships as a single 18-inch bar, packaged as one unit per order.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for predictable heat treatment response\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for consistent dimensional accuracy\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to minus 0.005 inches for tight fitment in precision setups\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.250 inches ensures full usable length is delivered\u003c\/li\u003e\n\u003cli\u003eSquareness held to 0.003 inches per inch on all edges for reliable reference surfaces\u003c\/li\u003e\n\u003cli\u003eSingle-piece packaging with no minimum order beyond one bar\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI O1 oil-hardening tool steel flat bar suitable for general toolroom and die-making applications requiring oil-quench heat treatment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eO1 tool steel flat stock is worked by qualified machinists and tool and die makers using conventional milling, turning, grinding, and EDM equipment. When heat treating, follow the material manufacturer's recommended austenitizing and quench procedures for O1 tool steel to achieve target hardness without cracking. Allow the bar to reach a uniform temperature before quenching. Proper eye and skin protection should be used during any grinding or cutting operations.\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: 1-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 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: 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 0.250 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: 31.88 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: 54236\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51544532156722,"sku":"54236","price":1016.58,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_0638abe7-23a1-4386-8bbc-d50fc48567bc.jpg?v=1785928982","url":"https:\/\/voomisupply.com\/products\/starrett-54236-o1-tool-steel-flat-stock-1-1-4x5x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}