{"product_id":"starrett-54212-o1-tool-steel-flat-stock-1x1-25x18-in","title":"Starrett 54212 O1 Tool Steel Flat Stock 1x1.25x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54212 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured to AISI Type O1 material specification, this flat stock measures 1 inch thick, 1-1\/4 inches wide, and 18 inches long and weighs 6.38 pounds. Thickness tolerance is held to +\/- 0.001 inches, and squareness is maintained at 0.003 inches per inch on all edges. These tight tolerances make it well suited for applications where dimensional consistency before hardening is critical. Licensed machinists, tool and die makers, and skilled tradespeople handling precision fabrication work are the primary users of this material.\u003c\/p\u003e\u003cp\u003eThis flat stock is used in fabrication shops, tool rooms, and machine shops for producing punches, dies, gauges, jigs, and custom tooling. O1 tool steel is valued for its good machinability in the annealed state and its ability to achieve high surface hardness after oil quenching. The 18-inch length provides a workable blank for most standard tooling cutoffs. It is suitable for both light production and one-off tooling applications where ground flat stock is required prior to heat treat.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for consistent hardenability after quench\u003c\/li\u003e\n\u003cli\u003eThickness held to +\/- 0.001 inches for precise pre-grind stock allowance\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to -0.005 inches maintains close sizing\u003c\/li\u003e\n\u003cli\u003eLength tolerance of +0.250 inches provides adequate cutoff allowance\u003c\/li\u003e\n\u003cli\u003eSquareness maintained at 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eSingle-piece packaging suitable for toolroom and small-shop ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard O1 oil-hardening flat stock blank compatible with conventional toolroom heat-treat processes requiring oil quench hardening of AISI Type O1 tool steel.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting, grinding, and machining should be performed by qualified machinists using appropriate tooling for hardened or semi-hardened steel stock. Always anneal or verify the material condition before machining to final dimensions. Heat treatment, including oil quenching and tempering, should follow recognized procedures for AISI O1 tool steel and be performed by personnel familiar with applicable shop safety practices. Wear appropriate PPE when cutting or grinding tool steel.\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\u003eOverall Thickness\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness Tolerance\u003c\/strong\u003e: +\/- 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: 0.000 to -0.005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: +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: 6.38 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: 54212\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540168769842,"sku":"54212","price":291.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_bd0b7d25-c22c-4a1c-a4d9-9f1446181876.jpg?v=1785847803","url":"https:\/\/voomisupply.com\/products\/starrett-54212-o1-tool-steel-flat-stock-1x1-25x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}