{"product_id":"starrett-57321-a2-tool-steel-flat-stock-1-8x7x36-in","title":"Starrett 57321 A2 Tool Steel Flat Stock 1\/8x7x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57321 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require tight-tolerance raw stock for fabricating punches, dies, gauges, and precision tooling components. Measuring 0.125 inches thick, 7 inches wide, and 36 inches long, this bar conforms to AISI A2 tool steel specifications. Thickness tolerance is held to plus or minus 0.001 inches, and width tolerance runs plus 0.000 to 0.005 inches, giving fabricators predictable starting dimensions before heat treating or final grinding. The bar ships at approximately 10.26 pounds.\u003c\/p\u003e\u003cp\u003eA2 air-hardening tool steel is a general-purpose cold-work steel widely used in tool and die shops, metal fabrication facilities, and maintenance departments. The air-hardening characteristic means the material reaches working hardness by cooling in still air after austenitizing, reducing distortion compared to oil-hardening grades. This flat stock is suited to applications requiring a stable, machinable blank that can be profile-cut, EDM-machined, or surface-ground to finished dimensions prior to heat treatment. It is appropriate for both production tooling and prototype work where precise dimensional control is essential.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI A2 air-hardening tool steel construction for predictable hardening response and reduced distortion\u003c\/li\u003e\n\u003cli\u003eThickness held to plus or minus 0.001 inches for consistent stock removal during grinding\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of plus 0.000 to 0.005 inches allows direct use as reference or blanking stock\u003c\/li\u003e\n\u003cli\u003eSquareness edge tolerance of 0.003 inches per inch ensures flat, square reference surfaces\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.25 inches provides sufficient facing stock for cut-to-length operations\u003c\/li\u003e\n\u003cli\u003eFull 36-inch length accommodates multiple tool blanks from a single bar\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard AISI A2 cold-work tool steel flat bar suitable for use wherever A2 air-hardening flat stock is specified in tooling, die, and precision fabrication applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting, grinding, and heat treating of tool steel should be performed by qualified toolmakers or machinists familiar with A2 material handling requirements. Appropriate personal protective equipment, including eye and hand protection, is required during sawing, milling, or grinding operations. Heat treatment should follow established AISI A2 austenitizing and air-cooling procedures; consult a qualified metallurgist or heat treater for production work. Deburr all cut edges before handling or storage to prevent injury and surface rust initiation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tool Steel, AISI A2 Air-Hardening\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 36 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 0.25 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\u003eSquareness (Edge)\u003c\/strong\u003e: 0.003 inches per inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 10.26 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: 57321\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539137593650,"sku":"57321","price":771.33,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_0949992b-5850-4b04-b02d-887b80ba50c3.jpg?v=1785835229","url":"https:\/\/voomisupply.com\/products\/starrett-57321-a2-tool-steel-flat-stock-1-8x7x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}