{"product_id":"starrett-59157-o1-tool-steel-flat-stock-3-16x3-16x36-in","title":"Starrett 59157 O1 Tool Steel Flat Stock 3\/16x3\/16x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 59157 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 3\/16 inches thick by 3\/16 inches wide by 36 inches long and holds a thickness tolerance of plus or minus 0.001 inches. O1 tool steel is a general-purpose oil-hardening grade known for its dimensional stability after heat treatment, making it a standard choice for punches, dies, gauges, and custom tooling. The bar ships in a single piece at 0.36 pounds and is suitable for shop cutting to length.\u003c\/p\u003e\u003cp\u003eThis flat stock is used in machine shops, tool-and-die operations, and maintenance departments where precision steel bar stock must be machined or ground to final form before hardening. The 36-inch length provides enough material for multiple short blanks. Typical users include tool and die makers, machinists, and maintenance technicians who require consistent raw stock with tight dimensional tolerances. The square cross-section profile suits applications where uniform wall thickness on all four sides is required prior to grinding or EDM work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel material specification\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for close-tolerance tooling blanks\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to minus 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.015 inches\u003c\/li\u003e\n\u003cli\u003eEdge squareness: all edges 0.003 inches per inch maximum\u003c\/li\u003e\n\u003cli\u003eSquare cross-section profile — 3\/16 inches by 3\/16 inches — for uniform stock removal on all sides\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard O1 oil-hardening flat stock bar for use in general tool and die, punch, gauge, and precision machining applications requiring AISI Type O1 material.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis is raw tool steel bar stock intended for machining, grinding, or sawing prior to heat treatment. Use appropriate metal-cutting equipment and personal protective equipment when cutting or grinding. O1 steel should be hardened and tempered by a qualified heat treater following established procedures for oil-quench tool steels. Handle cut edges carefully, as burrs from sawing or shearing can be sharp.\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: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3\/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: All edges 0.003 inches per inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.36 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: 59157\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539576946994,"sku":"59157","price":204.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_b4b20545-7fa3-49d7-94ba-e89301c9041e.jpg?v=1785843366","url":"https:\/\/voomisupply.com\/products\/starrett-59157-o1-tool-steel-flat-stock-3-16x3-16x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}