{"product_id":"drill-rod-tool-steels-57788-o1-tool-steel-flat-stock","title":"Drill Rod Tool Steels 57788 O1 Tool Steel Flat Stock","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DRILL ROD TOOL STEELS 57788 is an O1 oil-hardening tool steel flat bar cut to 0.5 inches thick, 3.5 inches wide, and 18 inches long. Conforming to AISI Type O1 specification, this flat stock is ground to close tolerances and is well suited for toolmaking, die work, punches, gauges, and precision machined components. At 9.02 pounds per piece, it offers substantial material for demanding shop applications. Thickness tolerance is held to plus or minus 0.001 inches, width tolerance is plus 0.005 minus 0.000 inches, and length tolerance is plus 0.25 inches, making it appropriate for applications where dimensional consistency matters before and after heat treat.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock in this size range is a standard choice for machinists, tool and die makers, and metalworking shops producing short-run tooling, fixtures, and blanks. The oil-hardening designation means it reaches working hardness through an oil quench cycle, which minimizes distortion compared to water-hardened grades. This piece is delivered in the annealed condition, ready for machining prior to heat treatment. It is sized for bench and mill work without requiring significant stock removal to reach a usable profile.\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 precise fitment in tooling applications\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of plus 0.005 minus 0.000 inches ensures stock is never undersize\u003c\/li\u003e\n\u003cli\u003eSquareness: edge 0.003 inches per inch of thickness, end 0.004 inches per inch of thickness\u003c\/li\u003e\n\u003cli\u003e18-inch length with plus 0.25-inch length tolerance provides adequate material for most blank layouts\u003c\/li\u003e\n\u003cli\u003eShips as a single piece at 9.02 pounds, no minimum quantity beyond one unit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI Type O1 oil-hardening flat stock suitable for general toolmaking, die blanks, punch stock, and precision fixture components where a ground, close-tolerance flat bar is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of tool steel should be performed by qualified machinists or tool and die professionals familiar with O1 oil-hardening grades. All machining operations should be completed prior to hardening and tempering. Appropriate personal protective equipment, including eye and hand protection, is required when cutting or grinding tool steel. Consult the material supplier or a qualified metallurgist for heat treat cycle parameters specific to the finished part geometry.\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: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3.5 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: plus 0.005 minus 0.000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: plus or minus 0.003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquareness\u003c\/strong\u003e: Edge 0.003 inches per inch of thickness, End 0.004 inches per inch of thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 9.02 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: DRILL ROD TOOL STEELS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 57788\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DRILL ROD \u0026 TOOL STEELS","offers":[{"title":"Default Title","offer_id":51983402467634,"sku":"57788","price":208.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0bd010a1cae711f9686084786dbdb869_f4c4f666-4db5-4cb0-95dd-acf9606cd254.jpg?v=1789984084","url":"https:\/\/voomisupply.com\/products\/drill-rod-tool-steels-57788-o1-tool-steel-flat-stock","provider":"Voomi Supply","version":"1.0","type":"link"}