{"product_id":"starrett-54465-o1-tool-steel-flat-stock-5-8-x-1-1-2-x-36-in","title":"Starrett 54465 O1 Tool Steel Flat Stock 5\/8 X 1-1\/2 X 36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54465 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Manufactured from AISI Type O1 tool steel, this flat stock measures 0.625 inches thick, 1.5 inches wide, and 36 inches long, with a weight of 9.56 pounds. Thickness and squareness tolerances are held to plus or minus 0.001 inches, making it suitable for applications where dimensional accuracy is critical before and after heat treatment. Machinists, tool and die makers, and metalworking professionals select O1 flat stock for its consistent pre-hardened geometry and predictable response to oil-quench hardening.\u003c\/p\u003e\u003cp\u003eThis flat stock is used in the fabrication of punches, dies, gauges, jigs, fixtures, and cutting tools in both job shop and production environments. The 36-inch length accommodates a wide range of blanking and machining operations before final profiling and heat treatment. Width tolerance runs from negative 0 to negative 0.005 inches, and length tolerance is plus 0.015 inches, consistent with standard stock material allowances for finish machining. Edge squareness is held to 0.003 inches per inch across all edges, supporting reliable layout and setup work without additional truing.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for predictable hardening response in oil quench\u003c\/li\u003e\n\u003cli\u003eThickness of 0.625 inches with plus or minus 0.001 inch tolerance for close-tolerance blanks\u003c\/li\u003e\n\u003cli\u003eWidth of 1.5 inches with a tolerance of negative 0 to negative 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength of 36 inches with a plus 0.015 inch tolerance to allow for finish cuts\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eSingle-piece quantity suitable for prototype, repair, and low-volume tooling work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI Type O1 oil-hardening tool steel flat stock suitable for general toolmaking, die making, and precision machining applications requiring oil-quench heat treatment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eO1 tool steel flat stock is worked by machinists and tool and die makers using conventional milling, grinding, and sawing equipment. Always anneal or verify material condition before machining to critical dimensions. Heat treatment should be performed by qualified personnel following established oil-quench procedures for O1 tool steel; improper quench rate or temperature control can result in distortion or cracking. Use appropriate personal protective equipment when cutting, grinding, or heat-treating tool steel.\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: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.5 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: negative 0 to negative 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: 9.56 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: 54465\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540843069746,"sku":"54465","price":403.62,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_cfafa048-9c7b-49db-8467-ebb0b5d365cf.jpg?v=1785864775","url":"https:\/\/voomisupply.com\/products\/starrett-54465-o1-tool-steel-flat-stock-5-8-x-1-1-2-x-36-in","provider":"Voomi Supply","version":"1.0","type":"link"}