{"product_id":"starrett-54068-o1-tool-steel-flat-stock-1-4x1-4x18-in","title":"Starrett 54068 O1 Tool Steel Flat Stock 1\/4x1\/4x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54068 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 0.25 inches thick by 0.25 inches wide by 18 inches long and weighs 0.32 pounds. O1 tool steel is valued for its consistent response to oil-hardening heat treatment, good machinability in the annealed state, and ability to hold a sharp edge after hardening. Thickness tolerance is held to plus or minus 0.001 inches, making this stock suitable for applications where dimensional accuracy prior to grinding or final machining is critical. Machinists, toolmakers, and die makers are the primary users of this material.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for small tool blanks, punches, form tools, and custom die components in both job shop and production tool room environments. The 18-inch length allows multiple pieces to be cut from a single bar. The tight squareness specification of 0.003 inches per inch on all edges reduces layout and setup time. This bar ships in an annealed condition, ready for machining and subsequent heat treatment.\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: 0.25 inches with plus or minus 0.001 inch tolerance\u003c\/li\u003e\n\u003cli\u003eWidth: 0.25 inches with tolerance of minus 0.000 to minus 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength: 18 inches with plus 0.250 inch length tolerance\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eAnnealed condition — machinable before hardening\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard O1 tool steel flat stock bar for use in tool rooms, die shops, and precision machining operations requiring oil-hardening tool steel in a 0.25 inch by 0.25 inch cross-section.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting and machining of tool steel flat stock should be performed with tooling rated for hardened or semi-hard ferrous stock, depending on the material condition. Heat treatment of O1 steel should be performed by a qualified heat treater or toolmaker following established procedures for oil quenching. Always wear appropriate PPE when cutting, grinding, or heat treating tool steel. Dispose of cutting fluids and quench oils in accordance with local regulations.\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: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.25 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: minus 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: 0.32 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: 54068\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540467646770,"sku":"54068","price":77.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_da2df150-5b64-4c70-87c2-c2ac68d05746.jpg?v=1785856141","url":"https:\/\/voomisupply.com\/products\/starrett-54068-o1-tool-steel-flat-stock-1-4x1-4x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}