{"product_id":"starrett-54146-o1-tool-steel-flat-stock-7-16x6x18-in","title":"Starrett 54146 O1 Tool Steel Flat Stock 7\/16x6x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54146 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, jig construction, and general machining applications. Conforming to AISI Type O1 material specification, this flat stock measures 7\/16 inches thick, 6 inches wide, and 18 inches long, with a finished weight of 13.39 pounds. Thickness and squareness tolerances are held to plus or minus 0.001 inches, making this stock suitable for precision work where dimensional consistency matters before and after heat treatment. Licensed machinists, toolmakers, and metalworking shops are the primary users.\u003c\/p\u003e\u003cp\u003eO1 tool steel flat stock is well suited for fabricating punches, dies, gauges, cutting tools, and fixtures in both job shop and production environments. The oil-hardening grade offers good machinability in the annealed state and hardens uniformly when quenched in oil, making it a reliable choice when close dimensional control through the hardening process is required. This piece is supplied in annealed condition, ready for machining prior to heat treatment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel for consistent hardenability\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for precision fitment\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of 0.000 to minus 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.250 inches, minus 0 inches\u003c\/li\u003e\n\u003cli\u003eSquareness held to 0.003 inches per inch on all edges\u003c\/li\u003e\n\u003cli\u003eSupplied in annealed condition for easy pre-heat-treatment machining\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose O1 tool steel flat bar suitable for toolmaking, die making, and precision fixture fabrication where AISI Type O1 oil-hardening material is specified.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of tool steel should be performed by qualified toolmakers or machinists familiar with O1 grade handling procedures. Always follow appropriate shop safety practices when cutting, grinding, or heat treating tool steel, including the use of proper PPE. Oil quenching should be performed per established metallurgical procedures for AISI O1 to achieve target hardness without cracking. Consult material safety data and applicable shop standards before beginning heat treatment operations.\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: 7\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 6 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: 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 0.250 inches, minus 0 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: 13.39 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: 54146\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540494647602,"sku":"54146","price":525.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_b7616637-6788-4a2b-850d-eadd8210a6ee.jpg?v=1785856508","url":"https:\/\/voomisupply.com\/products\/starrett-54146-o1-tool-steel-flat-stock-7-16x6x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}