{"product_id":"starrett-58901-o1-tool-steel-flat-stock-1-32x2x36-in","title":"Starrett 58901 O1 Tool Steel Flat Stock 1\/32x2x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 58901 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 1\/32 inch thick, 2 inches wide, and 36 inches long, with a weight of 0.64 pounds. Thickness tolerance is held to plus or minus 0.001 inches, supporting accurate stock removal and ground-finish work. The edge squareness is controlled to 0.003 inches per inch on all edges. Machinists, tool and die makers, and metalworking shops rely on O1 flat stock as a versatile, oil-quench-hardenable material that machines cleanly in the annealed condition and responds predictably to heat treatment.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for fabricating punches, dies, gauges, jigs, fixtures, blades, and other tooling components where dimensional consistency in the pre-hardened blank is critical. The 36-inch length allows multiple parts to be laid out and cut from a single bar, reducing material waste on short-run tooling projects. Industrial maintenance shops and production machine shops both use O1 flat stock as a go-to material for small tooling that requires moderate wear resistance after oil quenching and tempering.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel construction for predictable heat-treat response\u003c\/li\u003e\n\u003cli\u003eThickness: 1\/32 inch with tolerance of plus or minus 0.001 inches\u003c\/li\u003e\n\u003cli\u003eWidth: 2 inches with tolerance of 0.000 to minus 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength: 36 inches with tolerance of plus 0.015 inches\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eSupplied in annealed condition, ready for machining prior to hardening\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI Type O1 oil-hardening tool steel flat stock suitable for general toolmaking, die making, and precision fixture fabrication where oil-quench-hardenable steel in flat bar form is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting, grinding, and machining should be performed in the annealed condition before any heat treatment. Hardening and tempering of O1 tool steel involves specific austenitizing temperatures and oil-quench procedures that must be performed by or under the direction of a qualified machinist or heat-treat professional following established metallurgical guidelines. Use appropriate personal protective equipment when cutting or grinding tool steel. Secure the workpiece firmly before machining to prevent movement and maintain dimensional tolerances.\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\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2 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\u003eEdge Squareness\u003c\/strong\u003e: 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.64 pounds\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: 58901\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539113738546,"sku":"58901","price":238.54,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_70832bab-cd2b-4e6a-b08d-3ff624409a4d.jpg?v=1785834848","url":"https:\/\/voomisupply.com\/products\/starrett-58901-o1-tool-steel-flat-stock-1-32x2x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}