{"product_id":"starrett-57666-a2-tool-steel-flat-stock-1-1-2x2-1-2x18-in","title":"Starrett 57666 A2 Tool Steel Flat Stock 1-1\/2x2-1\/2x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 57666 is an A2 air-hardening tool steel flat stock bar measuring 1-1\/2 inches thick, 2-1\/2 inches wide, and 18 inches long. Manufactured from AISI Type A2 tool steel, this flat stock is supplied in the annealed condition, ready for machining, grinding, and subsequent heat treatment. A2 tool steel offers good dimensional stability during air-hardening, making it a reliable choice for dies, punches, gauges, and precision tooling components. Machinists, tool-and-die makers, and industrial maintenance technicians work with this material when fabricating or repairing production tooling that requires a balance of toughness and wear resistance.\u003c\/p\u003e\n\u003cp\u003eThis flat stock is suited for job shops, tool rooms, and maintenance departments that manufacture or refurbish tooling in-house. Typical applications include blanking dies, forming dies, trimming punches, shear blades, and precision fixtures. The close tolerance on thickness, width, and squareness simplifies layout and reduces stock removal during finishing operations. The 18-inch length provides workable blanks for most standard tooling sizes without excessive cutoff waste.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI Type A2 air-hardening tool steel for stable, low-distortion heat treatment\u003c\/li\u003e\n  \u003cli\u003eThickness tolerance of +0.010 to 0.015 inches for consistent stock dimensions\u003c\/li\u003e\n  \u003cli\u003eWidth tolerance of +0.010 to 0.015 inches\u003c\/li\u003e\n  \u003cli\u003eSquareness tolerance of +0.010 to 0.015 inches for accurate layout reference\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of +0.250 inches\u003c\/li\u003e\n  \u003cli\u003eReady for machining in the annealed condition prior to hardening\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose A2 tool steel flat bar for use in any tool room or machining application requiring AISI A2 air-hardening material in 1-1\/2 x 2-1\/2 inch cross-section stock.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eCutting and machining of tool steel flat stock should be performed by qualified machinists using appropriate cutting fluids and tooling rated for hardened or semi-hardened steel. Heat treatment, including hardening and tempering, should follow AISI A2 specifications and be performed by a qualified heat treat facility or experienced toolmaker. Always wear appropriate PPE when cutting, grinding, or handling raw steel stock. Deburr all edges after machining to prevent handling injuries and to ensure accurate fixture seating.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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 A2 Air-Hardening\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2-1\/2 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\u003eSquareness Tolerance\u003c\/strong\u003e: +0.010 to 0.015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: +0.250 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 19.1 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 57666\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540740702514,"sku":"57666","price":832.41,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_0899cd60-957d-4cba-90e0-5980b3762376.jpg?v=1785863414","url":"https:\/\/voomisupply.com\/products\/starrett-57666-a2-tool-steel-flat-stock-1-1-2x2-1-2x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}