{"product_id":"starrett-57566-a2-tool-steel-flat-stock-5-32x3x18-in","title":"Starrett 57566 A2 Tool Steel Flat Stock 5\/32x3x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57566 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, fixture fabrication, and precision machining applications. Measuring 5\/32 inch thick, 3 inches wide, and 18 inches long, this flat stock is manufactured to tight dimensional tolerances: +0.010 to 0.015 inches on thickness, width, and squareness, and +0.25 inch on length. A2 tool steel offers excellent wear resistance and dimensional stability during heat treatment, making it a preferred choice for toolmakers and machinists who need consistent stock that holds tolerance through hardening cycles. Weighing 2.38 pounds per piece, this bar ships as a single unit.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for fabricating punches, dies, gauges, templates, and other precision tooling components in machine shops, tool-and-die operations, and maintenance shops. The air-hardening A2 grade is selected when distortion during heat treatment must be minimized. It is commonly worked by milling, grinding, and EDM before hardening, then finish-ground to final dimensions after the hardening cycle.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eA2 air-hardening tool steel for minimal distortion during heat treatment\u003c\/li\u003e\n\u003cli\u003eTight tolerance: +0.010 to 0.015 inches on thickness, width, and squareness\u003c\/li\u003e\n\u003cli\u003eLength tolerance of +0.25 inch for predictable stock yield\u003c\/li\u003e\n\u003cli\u003eFlat stock profile ready for milling, grinding, and EDM operations\u003c\/li\u003e\n\u003cli\u003eSingle-piece package quantity with no minimum order beyond one unit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose A2 air-hardening tool steel flat stock suitable for toolmaking, die fabrication, and precision fixture work where controlled distortion during hardening is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of A2 tool steel should be performed by qualified toolmakers or machinists following established shop procedures. All grinding, milling, or EDM operations should be completed before the hardening cycle to reduce finish stock requirements. Follow the material manufacturer's recommended austenitizing and quench parameters for A2 grade; do not substitute a water or oil quench for the air-hardening process. Appropriate personal protective equipment must be worn when cutting, grinding, or heat-treating tool steel stock.\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 A2 Air-Hardening\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 5\/32 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3 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\u003eSquare 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 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.38 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 57566\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540383662386,"sku":"57566","price":170.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_7be89ef3-4b2c-45a8-858d-f6c463632b40.jpg?v=1785853815","url":"https:\/\/voomisupply.com\/products\/starrett-57566-a2-tool-steel-flat-stock-5-32x3x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}