{"product_id":"starrett-54643-a2-tool-steel-flat-stock-3-8x1x36-in","title":"Starrett 54643 A2 Tool Steel Flat Stock 3\/8x1x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 54643 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. It arrives in an annealed, ready-to-machine condition and hardens by air quench after heat treatment, producing a stable, low-distortion finished tool. The bar measures 0.375 inches thick, 1 inch wide, and 36 inches long, with a weight of 4.39 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications requiring close dimensional control. Licensed toolmakers, machinists, and die makers are the primary installers and users of this material.\u003c\/p\u003e\u003cp\u003eA2 tool steel flat stock is used in the fabrication of blanking dies, punches, forming tools, gauges, and similar precision tooling. The air-hardening characteristic of AISI A2 reduces warpage risk during the hardening cycle compared to oil-hardening grades, making it a preferred choice for flat and thin-cross-section tools. This bar is sized for bench or surface grinder work and is commonly stocked in tool rooms serving metalworking, stamping, and general manufacturing operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI A2 air-hardening tool steel — reduced distortion during heat treatment versus oil-hardening grades\u003c\/li\u003e\n\u003cli\u003eThickness tolerance: plus or minus 0.001 inches for precise, predictable stock removal\u003c\/li\u003e\n\u003cli\u003eWidth tolerance: plus 0.000 to 0.005 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance: plus 0.25 inches\u003c\/li\u003e\n\u003cli\u003eSquareness: edge all 0.003 inches per inch\u003c\/li\u003e\n\u003cli\u003eSquare tolerance: plus or minus 0.001 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard A2 air-hardening tool steel flat bar suitable for fabrication into dies, punches, gauges, and precision tooling components in metalworking and manufacturing applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of tool steel should be performed by qualified toolmakers or machinists familiar with AISI A2 material specifications. Always follow the steel supplier or tooling engineer recommendations for preheat, austenitizing temperature, and air-quench procedures. Wear appropriate PPE including heat-resistant gloves and eye protection when handling heated material. Grinding operations should be performed with appropriate wheel selection to avoid surface burns that can reduce surface hardness.\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: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1 inch\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\u003c\/strong\u003e: Edge all 0.003 inches per inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.39 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: 54643\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541652799794,"sku":"54643","price":317.43,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_90548ee1-3433-45c5-afa2-531d2e0b7edd.jpg?v=1785881256","url":"https:\/\/voomisupply.com\/products\/starrett-54643-a2-tool-steel-flat-stock-3-8x1x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}