{"product_id":"starrett-57576-a2-tool-steel-flat-stock-3-16x5x18-in","title":"Starrett 57576 A2 Tool Steel Flat Stock 3\/16x5x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57576 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require a dimensionally consistent, weldable blank ready for heat treatment. Measuring 3\/16 inches thick by 5 inches wide by 18 inches long, it ships in an annealed condition and achieves full hardness through air-quench heat treatment, which minimizes distortion compared to oil- or water-hardening grades. A2 tool steel offers a strong balance of wear resistance and toughness, making it a reliable choice for punches, dies, jigs, fixtures, and gauging components. Thickness, width, and squareness tolerances are held to +0.010 to 0.015 inches, and length tolerance is +0.25 inches.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for job shops, toolrooms, and maintenance departments in manufacturing environments. It supports applications where a close-tolerance, machinable blank is needed before hardening, including punch and die sets, forming tools, wear plates, and fixture components. The 3\/16-inch thickness makes it a practical choice for lighter tooling and detail work where thicker stock would require excessive material removal. At 4.82 pounds per piece, it is manageable for bench-top machining operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eA2 air-hardening tool steel resists distortion during heat treatment, preserving geometry through the hardening cycle\u003c\/li\u003e\n\u003cli\u003eThickness and width tolerance of +0.010 to 0.015 inches reduces pre-machining stock removal\u003c\/li\u003e\n\u003cli\u003eLength tolerance of +0.25 inches provides a positive allowance for cut-off and facing\u003c\/li\u003e\n\u003cli\u003eSquareness tolerance of +0.010 to 0.015 inches supports accurate layout and fixturing\u003c\/li\u003e\n\u003cli\u003eAnnealed condition allows machining, drilling, and grinding prior to heat treat\u003c\/li\u003e\n\u003cli\u003eAISI A2 material specification confirms alloy grade for documentation and shop floor traceability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard A2 air-hardening tool steel flat bar for general toolroom and die-making applications where AISI A2 material specification is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and grinding should be completed before heat treatment. Air-hardening tool steels require controlled austenitizing and quenching procedures per the steel manufacturer's heat treat data sheet — follow those parameters precisely. Personal protective equipment including eye protection and heat-resistant gloves is required during all heat treatment operations. Secure the workpiece properly in any mill vise or surface grinder magnetic chuck before cutting or grinding operations begin.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tool Steel, AISI Type A2 Air-Hardening\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 5 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: +0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: +0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: +0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: +0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.82 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: 57576\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541978743090,"sku":"57576","price":360.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_c5d208d5-4962-4f24-94c7-dfd9ca9e73b5.jpg?v=1785888735","url":"https:\/\/voomisupply.com\/products\/starrett-57576-a2-tool-steel-flat-stock-3-16x5x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}