{"product_id":"starrett-54055-o1-tool-steel-flat-stock-3-16x6x18-in","title":"Starrett 54055 O1 Tool Steel Flat Stock 3\/16x6x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54055 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 3\/16 inches thick, 6 inches wide, and 18 inches long, with a finished weight of 5.74 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional consistency is critical before and after hardening. It is supplied in the annealed condition, ready for machining prior to oil-quench heat treatment.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock is used by tool and die makers, machine shops, and metalworking tradespeople for fabricating punches, dies, gauges, fixtures, blades, and cutting tools. The 6-inch width and 18-inch length provide generous stock for layout and machining of medium to large tooling components. This material is particularly well suited for applications requiring a good balance of machinability in the annealed state and hardness after oil quenching.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel specification\u003c\/li\u003e\n\u003cli\u003eThickness tolerance: plus or minus 0.001 inches for precision fitment\u003c\/li\u003e\n\u003cli\u003eWidth tolerance: 0.000 to minus 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance: plus 0.250 inches, minus 0 inches\u003c\/li\u003e\n\u003cli\u003eEdge squareness: all edges held to 0.003 inches per inch\u003c\/li\u003e\n\u003cli\u003eSupplied in annealed condition for ease of machining prior to hardening\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose O1 tool steel flat stock for use in tool and die, fixture, and precision machining applications requiring oil-hardening material per AISI Type O1 specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of O1 tool steel should be performed by a qualified machinist or toolmaker familiar with tool steel handling procedures. Always follow established shop safety practices when sawing, milling, or grinding tool steel stock. Oil quench hardening requires proper heat treatment equipment and should follow the material manufacturer's recommended thermal cycle. Protect machined surfaces from corrosion prior to heat treatment.\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: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 18 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 0.250 inches, minus 0 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: 5.74 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: 54055\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51544593367346,"sku":"54055","price":291.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_e6edc37c-8941-46e5-863a-ea63781e965b.jpg?v=1785930831","url":"https:\/\/voomisupply.com\/products\/starrett-54055-o1-tool-steel-flat-stock-3-16x6x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}