{"product_id":"starrett-57520-a2-tool-steel-flat-stock-3-16x1-3-4x18-in","title":"Starrett 57520 A2 Tool Steel Flat Stock 3\/16x1-3\/4x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57520 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Manufactured to AISI A2 material specification, this flat stock measures 3\/16 inches thick, 1-3\/4 inches wide, and 18 inches long, weighing 1.67 pounds. A2 tool steel offers good dimensional stability during heat treat and resists distortion better than oil-hardening grades, making it a reliable choice for punches, dies, gauges, and forming tools. Thickness and squareness tolerances are held to plus or minus 0.001 inches, supporting accurate layout and machining before hardening.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for job shops, tool and die makers, and maintenance machinists working on press tooling, fixtures, and precision blanks. The 18-inch length provides a practical starting cut for a wide range of tooling applications. Width tolerance is held to plus 0.000 to 0.005 inches, and length tolerance is plus 0.250 inches, consistent with standard stock allowances that leave material for finishing. It is sold individually with a minimum order quantity of one piece.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI A2 air-hardening tool steel for dimensional stability during heat treatment\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inches for consistent stock removal\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of plus 0.000 to 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.250 inches\u003c\/li\u003e\n\u003cli\u003eSquare tolerance of plus or minus 0.001 inches\u003c\/li\u003e\n\u003cli\u003eReady-to-machine flat stock at 3\/16 x 1-3\/4 x 18 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard A2 air-hardening tool steel flat stock suitable for toolmaking, die making, and precision fixture fabrication applications requiring controlled tolerances and predictable heat-treat response.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting, grinding, and heat treatment of A2 tool steel should be performed by qualified machinists or tool and die makers familiar with hardening and tempering procedures. Always use appropriate personal protective equipment when sawing, grinding, or handling tool steel stock. Consult a heat-treat reference or the material manufacturer for austenitizing and tempering temperature ranges before processing. Secure the workpiece properly during machining operations to maintain dimensional accuracy.\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: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1-3\/4 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 0.000 to 0.005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.250 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: plus or minus 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.67 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: 57520\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542766551346,"sku":"57520","price":153.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_497272c1-f177-447f-9f39-37eb5b034e01.jpg?v=1785906788","url":"https:\/\/voomisupply.com\/products\/starrett-57520-a2-tool-steel-flat-stock-3-16x1-3-4x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}