{"product_id":"starrett-54431-o1-tool-steel-flat-stock-7-16x1-1-2x36in","title":"Starrett 54431 O1 Tool Steel Flat Stock 7\/16x1-1\/2x36in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 54431 is an O1 oil-hardening tool steel flat bar supplied in an annealed, ready-to-machine condition. Conforming to AISI Type O1 material specification, this flat stock measures 7\/16 inches thick, 1-1\/2 inches wide, and 36 inches long, and weighs 6.69 pounds per piece. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for precision toolmaking applications where dimensional consistency is critical before heat treatment. Machinists, tool and die makers, and maintenance professionals rely on this stock for fabricating punches, dies, gauges, jigs, and other hardened tooling components.\u003c\/p\u003e\n\u003cp\u003eO1 tool steel flat stock is used in job shops, tool rooms, and maintenance departments for creating custom tooling that requires a balance of toughness and wear resistance after oil quenching and tempering. The 36-inch length provides enough material to yield multiple blanks from a single piece, reducing setup changes. This size is well suited to applications in both light industrial and precision manufacturing environments where close-tolerance ground stock is specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI Type O1 oil-hardening tool steel construction for dependable heat-treat response\u003c\/li\u003e\n  \u003cli\u003eThickness held to plus or minus 0.001 inches for consistent machining stock\u003c\/li\u003e\n  \u003cli\u003eWidth tolerance of 0.000 to minus 0.005 inches ensures snug fit in fixture slots\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of plus 0.015 inches provides full usable material on every piece\u003c\/li\u003e\n  \u003cli\u003eEdge squareness held to 0.003 inches per inch across all edges\u003c\/li\u003e\n  \u003cli\u003e36-inch length yields multiple blanks per bar, reducing material waste\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose O1 oil-hardening tool steel flat bar for use in tool and die fabrication, fixture building, and precision machining applications requiring AISI Type O1 material specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eCutting and machining of tool steel flat stock should be performed with appropriate metalworking equipment using coolant to prevent work hardening at cut edges. Heat treatment — including oil quenching and tempering — should be performed by qualified personnel following established metallurgical procedures for AISI O1 tool steel. Wear appropriate PPE when cutting, grinding, or handling this material. Store flat to prevent warping prior to machining.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1-1\/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: 6.69 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31231200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 54431\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542911484210,"sku":"54431","price":326.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_0bc2e0ce-de3d-49b0-b5d4-314766de9f6e.jpg?v=1785910691","url":"https:\/\/voomisupply.com\/products\/starrett-54431-o1-tool-steel-flat-stock-7-16x1-1-2x36in","provider":"Voomi Supply","version":"1.0","type":"link"}