{"product_id":"starrett-54257-o1-tool-steel-flat-stock-1-16x1-2x36-in","title":"Starrett 54257 O1 Tool Steel Flat Stock 1\/16x1\/2x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54257 is an O1 oil-hardening tool steel flat stock bar sized at 1\/16 inch thick, 1\/2 inch wide, and 36 inches long. Manufactured to AISI Type O1 specifications, this flat stock is designed for toolmakers, machinists, and die makers who need a reliable, tight-tolerance steel blank ready for custom tooling, punches, dies, gauges, and similar precision components. The material ships in an annealed state, allowing it to be machined, ground, and shaped before oil-hardening heat treatment. Thickness tolerance is held to plus or minus 0.001 inch, supporting precision layout and close-fit applications.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock is a standard material in tool and die shops, maintenance departments, and machine shops. It is used to fabricate custom cutting tools, form dies, wear plates, scraper blades, and fixtures. The 36-inch length is a common mill-length bar suitable for single-piece or multi-piece blanking. This bar is appropriate for both small-shop and production-floor use wherever AISI O1 oil-hardening tool steel is called for by design or specification.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel construction for reliable heat-treat response\u003c\/li\u003e\n\u003cli\u003eThickness held to plus or minus 0.001 inch for consistent fit in precision assemblies\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to 0.005 inch for controlled stock sizing\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.015 inch, minus 0 inch ensures full usable length\u003c\/li\u003e\n\u003cli\u003eEdge squareness within 0.003 inch per inch for accurate layout and grinding reference\u003c\/li\u003e\n\u003cli\u003eSingle 36-inch bar per package, ordered in individual unit quantities\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI Type O1 oil-hardening flat stock blank for use in tool and die fabrication, fixture building, and precision machining applications requiring oil-hardening tool steel.\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. Material should be machined in the annealed condition before hardening. Oil-hardening heat treatment should follow the material supplier guidelines for AISI O1 and applicable shop procedures. Handle cut edges with care, as burrs and sharp corners are common after sawing or shearing.\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: 1\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1\/2 inch\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 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: 0.000 to 0.005 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.015 inch, minus 0 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEdge Squareness\u003c\/strong\u003e: 0.003 inch 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\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 54257\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540608680242,"sku":"54257","price":47.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_aa0fcc93-3305-43ac-b98d-4055d89e17cc.jpg?v=1785859958","url":"https:\/\/voomisupply.com\/products\/starrett-54257-o1-tool-steel-flat-stock-1-16x1-2x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}