{"product_id":"starrett-54437-o1-tool-steel-flat-stock-1-2-x-1-2-x-36-in","title":"Starrett 54437 O1 Tool Steel Flat Stock 1\/2 X 1\/2 X 36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54437 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured from AISI Type O1 tool steel, this flat stock measures 0.5 inches thick, 0.5 inches wide, and 36 inches long, with a weight of 2.55 pounds. O1 tool steel is valued for its ability to harden uniformly in an oil quench, making it a reliable choice for cutting tools, punches, dies, gauges, and similar components that require a hard, wear-resistant surface after heat treatment. Licensed machinists, toolmakers, and metalworking fabricators regularly work with this material.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for job shop, production tooling, and maintenance environments where precision ground stock in standard sizes is needed for fabrication or direct use. The 36-inch length allows for multiple blanks to be cut from a single bar, reducing material waste. The square cross-section and tight dimensional tolerances make it ready for layout, machining, or grinding without significant pre-processing.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel construction for consistent hardenability\u003c\/li\u003e\n\u003cli\u003eThickness and squareness tolerance of plus or minus 0.001 inches for precision fitment\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to 0.005 inches under nominal\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.015 inches over nominal\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch across all edges\u003c\/li\u003e\n\u003cli\u003e36-inch bar length provides flexibility for cutting multiple workpiece blanks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard O1 oil-hardening tool steel flat stock suitable for general toolmaking, die making, and precision fabrication applications requiring a 0.5 inch by 0.5 inch cross-section.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eO1 tool steel flat stock is worked by qualified machinists and toolmakers using conventional cutting, grinding, and milling equipment. When heat treating, follow established oil-quench procedures appropriate for AISI O1 material and allow proper tempering cycles to reduce brittleness. Always use appropriate personal protective equipment when cutting or grinding tool steel. Handle bar stock carefully to avoid nicking or distorting ground surfaces prior to use.\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: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.5 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 0.005 inches under nominal\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: 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.55 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: 54437\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540710588722,"sku":"54437","price":202.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_c29efad9-404e-466c-9d41-acbb33b780ca.jpg?v=1785862612","url":"https:\/\/voomisupply.com\/products\/starrett-54437-o1-tool-steel-flat-stock-1-2-x-1-2-x-36-in","provider":"Voomi Supply","version":"1.0","type":"link"}