{"product_id":"drill-rod-tool-steels-57728-o1-tool-steel-flat-stock","title":"Drill Rod Tool Steels 57728 O1 Tool Steel Flat Stock","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DRILL ROD TOOL STEELS 57728 is an O1 oil-hardening tool steel flat bar cut to 1\/8 inch thick, 10 inches wide, and 18 inches long. O1 is an AISI-standard oil-hardening tool steel valued for its dimensional stability during heat treatment and its ability to hold a sharp, hardened edge after quenching. This flat stock is used by machinists, toolmakers, and die makers who need a ready-to-machine blank that can be hardened in a shop oil bath. At 6.44 pounds, it is a substantial piece suitable for fixture plates, punches, dies, gauges, and similar precision tooling components. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for close-tolerance work with minimal initial grinding.\u003c\/p\u003e\u003cp\u003eThis flat stock is appropriate for job shops, toolrooms, and production facilities that fabricate custom tooling in-house. The 10-inch width and 18-inch length provide enough material for medium-sized die plates, blanking tools, or multiple smaller blanks cut from one piece. Width tolerance is plus 0.005 inches, minus 0.000 inches, and length tolerance is plus 0.25 inches. Edge squareness is held to 0.003 inches per inch of thickness; end squareness to 0.004 inches per inch of thickness. These tolerances support layout and machining without requiring extensive pre-machining of the stock edges on every workpiece.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel  -  stable geometry through the hardening cycle\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for close-tolerance blanks\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of plus 0.005 inches, minus 0.000 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.25 inches\u003c\/li\u003e\n\u003cli\u003eEdge squareness: 0.003 inches per inch of thickness; end squareness: 0.004 inches per inch of thickness\u003c\/li\u003e\n\u003cli\u003eReady-to-machine flat stock  -  no additional mill scaling or rough sizing required before layout\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 bar suitable for toolroom fabrication of dies, punches, gauges, fixture plates, and similar precision components requiring oil-quench hardening.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of O1 tool steel should be performed by a qualified machinist or toolmaker familiar with oil-hardening procedures. Wear appropriate PPE when cutting, grinding, or hardening this material. Follow established shop procedures for oil-quench hardening, including proper preheat and quench oil temperature control. Consult AISI O1 material data and your facility safety plan before performing any 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: 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 10 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: plus 0.005 inches, minus 0.000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: plus or minus 0.003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEdge Squareness\u003c\/strong\u003e: 0.003 inches per inch of thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Squareness\u003c\/strong\u003e: 0.004 inches per inch of thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 6.44 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: DRILL ROD TOOL STEELS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 57728\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DRILL ROD \u0026 TOOL STEELS","offers":[{"title":"Default Title","offer_id":52096129761586,"sku":"57728","price":216.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0bd010a1cae711f9686084786dbdb869_d5f46412-09f9-452c-9ab1-3cfbd8e922be.jpg?v=1790066227","url":"https:\/\/voomisupply.com\/products\/drill-rod-tool-steels-57728-o1-tool-steel-flat-stock","provider":"Voomi Supply","version":"1.0","type":"link"}