{"product_id":"drill-rod-tool-steels-81173924-4142-alloy-flat-stock","title":"Drill Rod Tool Steels 81173924 4142 Alloy Flat Stock","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DRILL ROD TOOL STEELS 81173924 is an AISI\/SAE Type 4142 alloy steel pre-hardened flat stock bar measuring 18 inches long, 4 inches wide, and 0.25 inches thick. This chromium-molybdenum alloy steel is supplied in a pre-hardened condition, delivering elevated strength and wear resistance without requiring additional heat treatment before use. At 5.08 pounds, this flat stock is suited for machining, fabrication, and tooling applications where dimensional consistency and material toughness are critical. Machinists, tool and die makers, and metal fabricators working in industrial and manufacturing environments are the primary users of this stock.\u003c\/p\u003e\u003cp\u003eThis flat stock is used in industrial machining shops and fabrication facilities for producing fixtures, jigs, dies, mold components, and structural machine parts. The pre-hardened 4142 alloy is a common choice for applications demanding higher tensile strength than mild steel but where through-hardening of a finished component is not practical. It is appropriate for both light and heavy fabrication settings where close-tolerance blanks are needed as starting material for secondary machining operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI\/SAE Type 4142 chromium-molybdenum alloy steel in pre-hardened condition\u003c\/li\u003e\n\u003cli\u003eNominal dimensions: 18 inches long, 4 inches wide, 0.25 inches thick\u003c\/li\u003e\n\u003cli\u003eLength tolerance: plus 0.125 inches\u003c\/li\u003e\n\u003cli\u003eWidth tolerance: plus 0.005 inches\u003c\/li\u003e\n\u003cli\u003eThickness tolerance: plus 0.001 inches\u003c\/li\u003e\n\u003cli\u003eSquare tolerance: 0.003 inches for consistent flatness and squareness\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI\/SAE Type 4142 pre-hardened alloy steel flat stock for use in general industrial machining, tooling, and fabrication applications requiring close-tolerance chromium-molybdenum alloy bar stock.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis material is intended for use by qualified machinists and metal fabricators using appropriate cutting, grinding, and machining equipment rated for hardened alloy steels. Carbide tooling is typically required for efficient machining of pre-hardened 4142 stock. Consult applicable shop safety standards and equipment manufacturer guidelines before beginning any cutting or grinding operations. Proper personal protective equipment, including eye and face protection, must be worn during all machining operations.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Specification\u003c\/strong\u003e: AISI\/SAE Type 4142 Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition\u003c\/strong\u003e: Pre-Hardened\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Thickness\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: plus 0.005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness Tolerance\u003c\/strong\u003e: plus 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: 0.003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 5.08 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: 81173924\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DRILL ROD \u0026 TOOL STEELS","offers":[{"title":"Default Title","offer_id":52064845627698,"sku":"81173924","price":133.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0bd010a1cae711f9686084786dbdb869_58d12614-cc39-42b1-a7ae-adbede7dc054.jpg?v=1790044406","url":"https:\/\/voomisupply.com\/products\/drill-rod-tool-steels-81173924-4142-alloy-flat-stock","provider":"Voomi Supply","version":"1.0","type":"link"}