{"product_id":"drill-rod-tool-steels-57751-o1-tool-steel-flat-stock","title":"Drill Rod Tool Steels 57751 O1 Tool Steel Flat Stock","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DRILL ROD TOOL STEELS 57751 is an O1 oil-hardening tool steel flat bar cut to 5\/16 inches thick, 5\/16 inches wide, and 18 inches long. O1 is an oil-quench tool steel known for good wear resistance, dimensional stability during hardening, and machinability in the annealed state. This flat stock ships in the annealed condition, ready for machining, grinding, and heat treating to final hardness. Machinists, tool-and-die makers, and metalworking professionals use this material to fabricate punches, dies, gauges, jigs, and cutting tools where controlled tolerances and predictable hardening response are required.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited to small-shop and production tool rooms working in light to medium tooling applications. The 18-inch length provides a practical starting cut for fabricating short tooling components without significant material waste. The square cross-section profile simplifies fixturing and grinding to final dimensions. At 0.51 pounds per piece, this bar is easy to handle at the bench vise or surface grinder without additional support equipment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI Type O1 oil-hardening tool steel  -  consistent, predictable heat-treat response\u003c\/li\u003e\n\u003cli\u003eAnnealed condition  -  machines and grinds cleanly before hardening\u003c\/li\u003e\n\u003cli\u003eTight thickness tolerance of plus or minus 0.001 inches for close-tolerance tooling work\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of plus 0.005 inches, minus 0.000 inches  -  always at or above nominal\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.25 inches  -  no undersize cuts\u003c\/li\u003e\n\u003cli\u003eSquare tolerance of plus or minus 0.003 inches for accurate cross-section geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI O1 oil-hardening flat stock suitable for general tool-and-die, jig, fixture, and gauge fabrication applications requiring an oil-quench tool steel in flat bar form.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of O1 tool steel should be performed by qualified machinists or tool-and-die professionals familiar with oil-quench hardening procedures. Always follow established shop safety practices when grinding or heat treating tool steel, including appropriate PPE and ventilation. Consult the material specification sheet for recommended preheat, austenitizing, and quench parameters before heat treating. Do not apply heat treatment procedures without verified process data for AISI O1 steel.\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: 0.3125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.3125 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\u003eSquareness\u003c\/strong\u003e: Edge 0.003 inches, End 0.004 inches per inch of thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.51 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: 57751\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DRILL ROD \u0026 TOOL STEELS","offers":[{"title":"Default Title","offer_id":51964743090482,"sku":"57751","price":54.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0bd010a1cae711f9686084786dbdb869_fccdc153-be89-4065-92a3-788d061f1f04.jpg?v=1789949298","url":"https:\/\/voomisupply.com\/products\/drill-rod-tool-steels-57751-o1-tool-steel-flat-stock","provider":"Voomi Supply","version":"1.0","type":"link"}