{"product_id":"starrett-56984-o1-tool-steel-flat-stock-0-25x5x18-in","title":"Starrett 56984 O1 Tool Steel Flat Stock 0.25x5x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 56984 is an O1 oil-hardening tool steel flat stock bar sized at 0.25 inches thick, 5 inches wide, and 18 inches long. O1 is an oil-quench tool steel valued for its dimensional stability during hardening, making it a reliable choice for dies, punches, gauges, and precision cutting tools. This flat stock ships in the annealed condition, ready for machining before heat treatment. Squareness is held to 0.003 inches per inch on all edges. Thickness and width tolerances run +0.010 to +0.015 inches. Length tolerance is +0.25 inches. Weighing 6.38 pounds, it suits machine shop, tool-and-die, and maintenance applications where accurate stock sizing is critical.\u003c\/p\u003e\n\u003cp\u003eO1 flat stock at this cross-section is commonly stocked by tool-and-die shops, maintenance machinists, and industrial trades needing a machinable blank for custom tooling. The 5-inch width and 0.25-inch thickness make this bar suitable for fabricating die plates, fixture plates, wear strips, and straight edges. It is intended for shops with access to heat-treating equipment, as the material achieves full hardness only after oil-quench hardening and tempering cycles. This piece is sold and shipped as a single bar.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI Type O1 oil-hardening tool steel for predictable heat-treat response\u003c\/li\u003e\n  \u003cli\u003eThickness and width tolerances of +0.010 to +0.015 inches for close-tolerance blanks\u003c\/li\u003e\n  \u003cli\u003eEdge squareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n  \u003cli\u003eAnnealed condition — fully machinable before hardening\u003c\/li\u003e\n  \u003cli\u003eSingle-piece quantity — no minimum bundle requirement\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of +0.25 inches — plan cut allowance accordingly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose O1 tool steel flat stock blank suitable for tool-and-die, punch, gauge, and precision fixture fabrication wherever AISI Type O1 oil-hardening material is specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMachining and fabrication of tool steel should be performed by qualified machinists familiar with AISI O1 material properties. Heat treating — including oil quenching and tempering — must follow established metallurgical procedures appropriate for O1 tool steel; consult a qualified heat-treat facility if in-house capabilities are not available. Always use appropriate personal protective equipment when cutting, grinding, or machining tool steel stock. Inspect bar dimensions against print tolerances before committing to final machining operations.\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: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 5 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: +0.010 to +0.015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: +0.010 to +0.015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: +0.25 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: 6.38 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 56984\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541483487538,"sku":"56984","price":364.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_c90a5474-f60e-4893-8940-94b11875cf58.jpg?v=1785877441","url":"https:\/\/voomisupply.com\/products\/starrett-56984-o1-tool-steel-flat-stock-0-25x5x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}