{"product_id":"starrett-54481-o1-tool-steel-flat-stock-0-75x2-5x36-in","title":"Starrett 54481 O1 Tool Steel Flat Stock 0.75x2.5x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54481 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 specification, this flat stock measures 0.75 inches thick, 2.5 inches wide, and 36 inches long, with a finished weight of 19.13 pounds. Thickness tolerance is held to +\/- 0.001 inches, making it suitable for applications where dimensional consistency before heat treatment is critical. Machinists, toolmakers, and die makers select O1 flat stock for its predictable oil-quench hardening behavior and good machinability in the annealed state.\u003c\/p\u003e\u003cp\u003eThis flat stock is used in tool and die shops, maintenance and repair operations, and general precision fabrication. Typical applications include punches, dies, gauges, bushings, and other tooling components that require a hardenable steel with close dimensional tolerances. The 36-inch length allows multiple blanks to be cut from a single bar. It is sold in single-piece quantities, making it practical for low-volume toolroom use or one-off fabrication jobs.\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 +\/- 0.001 inches for consistent pre-heat-treat dimensions\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to -0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance of +0.015 inches\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eSingle-piece packaging with no minimum order above one unit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI O1 oil-hardening tool steel flat stock suitable for general toolroom and die-making applications requiring a hardenable, machinable steel bar in this size range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting and machining of tool steel flat stock should be performed with appropriate metalworking equipment by qualified machinists or toolmakers. Oil hardening requires proper heat treatment equipment and should follow established metallurgical procedures for AISI O1 steel. Always use appropriate personal protective equipment when cutting, grinding, or heat treating tool steel. Consult applicable shop safety standards before beginning work.\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: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2.5 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: +\/- 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: 0.000 to -0.005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: +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: 19.13 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: 54481\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541229076786,"sku":"54481","price":672.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_7ef304cc-51e7-4e59-b5b8-e3438e3bcca7.jpg?v=1785870342","url":"https:\/\/voomisupply.com\/products\/starrett-54481-o1-tool-steel-flat-stock-0-75x2-5x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}