{"product_id":"starrett-54455-o1-tool-steel-flat-stock-9-16-x-9-16-x-36-in","title":"Starrett 54455 O1 Tool Steel Flat Stock 9\/16 X 9\/16 X 36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54455 is an O1 oil-hardening tool steel flat stock bar sized at 9\/16 inches thick, 9\/16 inches wide, and 36 inches long. Manufactured to AISI Type O1 specification, this flat stock is produced from tool steel and held to tight dimensional tolerances: plus or minus 0.001 inches on thickness, 0.000 to minus 0.005 inches on width, and plus 0.015 inches on length. Machinists, toolmakers, and die makers use this material as a starting blank for punches, dies, gauges, and other precision tooling components that require oil-hardening heat treatment after machining.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for job shops, tool and die operations, and maintenance machining environments where O1 tool steel is the specified grade. It is commonly roughed out on a mill or surface grinder to final dimensions, machined to shape in the annealed condition, then oil-quenched to achieve working hardness. The 36-inch length allows multiple blanks to be cut from a single bar, reducing material handling in low-volume toolmaking applications. Metalworking trades and tool-and-die professionals are the primary users of this product.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for predictable hardening response\u003c\/li\u003e\n\u003cli\u003eSquare cross-section at 9\/16 inches by 9\/16 inches enables use as both flat stock and bar stock\u003c\/li\u003e\n\u003cli\u003eThickness and squareness tolerance of plus or minus 0.001 inches supports precision blank work\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch across all edges\u003c\/li\u003e\n\u003cli\u003e36-inch length allows multiple part blanks per bar\u003c\/li\u003e\n\u003cli\u003eSupplied in annealed condition, ready for machining prior to heat treatment\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 blank compatible with conventional milling, grinding, and EDM operations followed by oil-quench heat treatment processes.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate coolant and tooling rated for tool steel. Secure the workpiece firmly before any cutting operation. Heat treatment to final hardness must be performed in accordance with AISI O1 heat treatment guidelines and should be carried out by personnel familiar with proper oil-quenching procedures. Wear appropriate PPE when cutting, grinding, or heat treating this material.\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: 9\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 9\/16 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: 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 0.015 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: 3.23 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: 54455\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539098468658,"sku":"54455","price":242.64,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_61868099-f0d4-4ea3-920d-256b9f784565.jpg?v=1785834691","url":"https:\/\/voomisupply.com\/products\/starrett-54455-o1-tool-steel-flat-stock-9-16-x-9-16-x-36-in","provider":"Voomi Supply","version":"1.0","type":"link"}