{"product_id":"starrett-54199-o1-tool-steel-flat-stock-3-4x8x18-in","title":"Starrett 54199 O1 Tool Steel Flat Stock 3\/4x8x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54199 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, jig fabrication, and precision machining applications. It measures 0.75 inches thick, 8 inches wide, and 18 inches long, and weighs 30.6 pounds. Manufactured to AISI Type O1 specifications, this flat stock ships in a ready-to-machine condition and is intended for hardening through an oil-quench heat treatment process. Machinists, tool-and-die makers, and metalworking professionals use O1 flat stock when they need a material that machines cleanly in the annealed state and achieves high hardness after heat treat. Tight dimensional tolerances are held at the mill to reduce prep time at the bench.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock in this size range is commonly used in shops producing punches, dies, gauges, cutting tools, and precision fixtures. The 8-inch width and 18-inch length provide sufficient stock for medium to large tooling blanks without requiring a full plate order. This piece is well suited for both prototype and production tooling environments where dimensional consistency and predictable heat-treat response are required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel — machines well in the annealed state and achieves high surface hardness after oil quench\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for consistent stock removal calculations\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to 0.005 inches under nominal for predictable fit in vises and fixtures\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.250 inches, minus 0 inches — stock arrives at or above specified length\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 with a minimum order quantity of 1 for shop flexibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI Type O1 oil-hardening tool steel flat stock suitable for general toolmaking, die making, and precision machining applications where O1 material specification is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool-and-die makers using appropriate metalworking equipment. O1 tool steel must be heat treated in a controlled atmosphere or salt bath furnace followed by an oil quench to achieve hardness — follow the material manufacturer heat-treat guidelines for soak temperature and quench procedure. Always wear appropriate PPE when cutting or grinding tool steel. Deburr all edges before handling to avoid injury.\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: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 30.6 pounds\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 0.250 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\u003eUNSPSC Code\u003c\/strong\u003e: 31231200\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: 54199\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541533360434,"sku":"54199","price":1137.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_6af2e339-535d-4018-a21a-8e6d21dc96ec.jpg?v=1785878615","url":"https:\/\/voomisupply.com\/products\/starrett-54199-o1-tool-steel-flat-stock-3-4x8x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}