{"product_id":"starrett-54338-o1-tool-steel-flat-stock-3-16x1-2x36-in","title":"Starrett 54338 O1 Tool Steel Flat Stock 3\/16x1\/2x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54338 is a precision-ground O1 oil-hardening tool steel flat bar intended for toolmakers, machinists, and die makers who need tight-tolerance raw stock for fabricating punches, dies, gauges, jigs, and fixture components. This flat stock measures 3\/16 inches thick, 1\/2 inches wide, and 36 inches long, held to a thickness tolerance of plus or minus 0.001 inches. The material is AISI Type O1 tool steel, a widely used oil-hardening grade valued for its dimensional stability during heat treat and its ability to hold a sharp cutting edge after hardening and tempering.\u003c\/p\u003e\u003cp\u003eThis flat stock is used in machine shops, tool-and-die operations, and maintenance departments that produce short-run tooling and precision mechanical components. It is suited for applications where the blank must be machined, ground to final dimension, then hardened in oil. Typical end uses include custom punches, small dies, form tools, locating keys, and wear plates in both light industrial and precision manufacturing environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for reliable heat treatment response\u003c\/li\u003e\n\u003cli\u003ePrecision thickness tolerance of plus or minus 0.001 inches for consistent stock removal\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to minus 0.005 inches — stock runs at or below nominal for predictable fits\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.015 inches — full-length stock with positive allowance for facing\u003c\/li\u003e\n\u003cli\u003eEdge squareness held to 0.003 inches per inch across all edges\u003c\/li\u003e\n\u003cli\u003eSingle-piece packaging allows ordering by the bar with no minimum overrun\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI O1 oil-hardening flat bar for general toolroom and machining applications requiring oil-quench heat-treatable tool steel in flat bar form.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting and grinding of O1 tool steel should be performed by a qualified machinist using appropriate metalworking equipment. When heat treating, follow the material supplier's recommended austenitizing temperature and oil-quench procedure for O1 grade — do not substitute a water quench. Wear appropriate PPE including eye protection and heat-resistant gloves during any thermal processing. Grinding after hardening produces fine steel dust; use proper ventilation and dust collection per applicable shop safety standards.\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: 1\/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: 0.96 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 54338\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542086418738,"sku":"54338","price":111.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_f4351f49-42ab-453f-87d5-79f264ac7886.jpg?v=1785891672","url":"https:\/\/voomisupply.com\/products\/starrett-54338-o1-tool-steel-flat-stock-3-16x1-2x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}