{"product_id":"starrett-57191-a2-tool-steel-flat-stock-3-8x3-5x18-in","title":"Starrett 57191 A2 Tool Steel Flat Stock 3\/8x3.5x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57191 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Manufactured to AISI A2 specification, this flat stock measures 0.375 inches thick, 3.5 inches wide, and 18 inches long, with a shipping weight of 6.69 pounds. A2 tool steel offers good dimensional stability during heat treatment and balanced wear resistance, making it a reliable choice for punches, dies, gauges, and similar components. Machinists and tool-and-die professionals work with this material in both job shop and production environments.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for fabricating custom tooling, fixtures, and wear components where air-hardening steel is specified. The 18-inch length provides workable stock for a range of part sizes without excessive waste. The controlled tolerances on all dimensions make it appropriate for precision applications where close fits are required before and after hardening. It is used in both small-shop and industrial toolroom settings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI A2 air-hardening tool steel for good dimensional stability during heat treatment\u003c\/li\u003e\n\u003cli\u003eThickness: 0.375 inches with tolerance of +0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003eWidth: 3.5 inches with tolerance of +0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003eLength: 18 inches with tolerance of +0.25 inches\u003c\/li\u003e\n\u003cli\u003eSquare tolerance: +0.010 to 0.015 inches for consistent cross-section geometry\u003c\/li\u003e\n\u003cli\u003eSupplied as flat stock bar ready for machining and heat treatment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as standard AISI A2 air-hardening tool steel flat stock compatible with conventional toolroom machining, grinding, and heat-treating processes specified for A2 tool steel.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachining and heat treatment of A2 tool steel should be performed by qualified machinists or tool-and-die professionals familiar with tool steel handling procedures. Always follow the steel manufacturer's recommended preheat, hardening, and tempering cycles for AISI A2 material. Use appropriate cutting fluids and feeds during machining to prevent work hardening of the surface. Wear proper PPE when cutting, grinding, or handling flat stock with sharp edges.\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: 3.5 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\u003eLength Tolerance\u003c\/strong\u003e: +0.25 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\u003eWeight\u003c\/strong\u003e: 6.69 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: 57191\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51539285246258,"sku":"57191","price":292.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_f247ffd6-1206-4fb3-8ed6-0caaa9512d19.jpg?v=1785837782","url":"https:\/\/voomisupply.com\/products\/starrett-57191-a2-tool-steel-flat-stock-3-8x3-5x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}