{"product_id":"starrett-54001-o1-tool-steel-flat-stock-1-8x3-4x18-in","title":"Starrett 54001 O1 Tool Steel Flat Stock 1\/8x3\/4x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54001 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 material specification, this flat stock measures 1\/8 inch thick, 3\/4 inch wide, and 18 inches long. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications that demand close dimensional control. At 0.48 pounds, the bar is ready for bench work, grinding, or heat treating in a shop environment. Machinists, tool-and-die makers, and mold makers are the primary users of this stock.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock is a standard material for fabricating cutting tools, punches, dies, gauges, and fixtures in both job shop and production toolroom environments. The oil-hardening characteristic of AISI O1 makes it well suited for applications where dimensional stability during heat treat is important. This bar is supplied in an annealed condition, allowing it to be machined and then hardened to final hardness by the end user through conventional oil-quench heat treatment. It is appropriate for low-to-medium production tooling where toughness and wear resistance are required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for predictable heat treat response\u003c\/li\u003e\n\u003cli\u003eThickness held to plus or minus 0.001 inches for close-tolerance toolroom use\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.0000 to 0.0050 inches (minus side only)\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.250 inches, minus 0 inches\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch across all edges\u003c\/li\u003e\n\u003cli\u003eSupplied annealed and ready for machining prior to hardening\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 toolroom, die-making, and precision fixture fabrication applications requiring close dimensional tolerances.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eO1 tool steel flat stock is machined and shaped by toolmakers prior to heat treatment. All grinding, drilling, and milling operations should be completed in the annealed state before oil-quench hardening. Wear appropriate PPE when performing heat treating operations. Follow applicable shop safety procedures and equipment manufacturer guidelines for furnace and quench tank operation.\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\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3\/4 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: 0.0000 to minus 0.0050 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.250 inches, minus 0 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: 0.48 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: 54001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539440140594,"sku":"54001","price":60.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_1c61ae85-1207-454d-be75-94afc4c00da6.jpg?v=1785840317","url":"https:\/\/voomisupply.com\/products\/starrett-54001-o1-tool-steel-flat-stock-1-8x3-4x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}