{"product_id":"starrett-54145-o1-tool-steel-flat-stock-7-16x4x18-in","title":"Starrett 54145 O1 Tool Steel Flat Stock 7\/16x4x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54145 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, jig and fixture fabrication, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 7\/16 inches thick, 4 inches wide, and 18 inches long, and weighs approximately 8.92 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making this stock suitable for applications where dimensional precision is critical before heat treatment. Licensed machinists, tool and die makers, and industrial fabricators work with this material in both shop and production environments.\u003c\/p\u003e\u003cp\u003eThis flat stock is used wherever O1 tool steel is specified for blanks, punches, dies, gauges, and cutting tools. The oil-hardening grade provides good toughness and wear resistance after hardening and is well suited to low-to-medium production tooling. The 4-inch width and 18-inch length make it appropriate for medium-sized tool blanks or can be cut down for smaller components. It ships as a single piece at the stated dimensions.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for consistent heat-treat response\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for precision fitment\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to minus 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.250 inches, minus 0 inches\u003c\/li\u003e\n\u003cli\u003eSquareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eReady-to-machine flat stock — no additional surface prep required before machining\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard O1 oil-hardening tool steel flat stock suitable for use in toolmaking, die making, and precision fabrication applications where AISI Type O1 material is specified.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting, grinding, and machining of tool steel flat stock should be performed with appropriate metalworking equipment and personal protective equipment. Heat treatment of O1 steel should follow the material manufacturer's recommended hardening and tempering cycles for the intended application. Consult applicable shop safety standards and material data sheets before processing. Handle edges with care, as machined tool steel edges can be sharp.\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: 7\/16 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: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 8.92 pounds\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, 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\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: 54145\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542404301106,"sku":"54145","price":363.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_ef91f059-49ed-4ef2-b8eb-2dd53c8d6fb6.jpg?v=1785899839","url":"https:\/\/voomisupply.com\/products\/starrett-54145-o1-tool-steel-flat-stock-7-16x4x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}