{"product_id":"starrett-57011-o1-tool-steel-flat-stock-3-8x6x18-in","title":"Starrett 57011 O1 Tool Steel Flat Stock 3\/8x6x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 57011 is a precision-ground O1 oil-hardening tool steel flat stock bar measuring 3\/8 inch thick, 6 inches wide, and 18 inches long. AISI Type O1 tool steel is a tungsten-bearing oil-hardening grade known for its excellent dimensional stability during heat treatment, good machinability in the annealed state, and strong wear resistance after hardening. This bar is used by tool-and-die makers, machinists, and metalworking tradespeople who need a close-tolerance, ready-to-machine blank for dies, punches, gauges, jigs, and fixtures. At 11.47 pounds, the bar carries enough cross-section for substantial tooling applications while remaining manageable on the bench.\u003c\/p\u003e\n\u003cp\u003eO1 flat stock in this size range is a standard starting blank in job shops, toolrooms, and maintenance departments that fabricate or repair cutting tools, forming dies, and precision fixtures. The 3\/8-inch thickness suits thin-profile die plates and wear pads, while the 6-inch width allows layout of multiple tool blanks from a single piece. The 18-inch length is a conventional cut length that minimizes saw time when parting out individual blanks. Machinists and tool-and-die makers are the primary trade users; precision grinding and EDM shops also use O1 flat stock as raw material for cavity inserts and electrodes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI Type O1 oil-hardening tool steel for predictable heat treatment and minimal distortion during quench\u003c\/li\u003e\n  \u003cli\u003eThickness and width held to a tight tolerance of plus 0.010 to 0.015 inches for consistent stock removal planning\u003c\/li\u003e\n  \u003cli\u003eLength tolerance of plus 0.25 inches ensures full nominal length on every piece\u003c\/li\u003e\n  \u003cli\u003eEdge squareness of 0.003 inches per inch on all edges for accurate layout and fixturing\u003c\/li\u003e\n  \u003cli\u003ePre-cut 18-inch length reduces saw setup time in toolroom and job-shop environments\u003c\/li\u003e\n  \u003cli\u003eSingle-piece minimum order quantity allows procurement of exactly what the job requires\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard raw-material blank for toolroom and die-making applications requiring AISI Type O1 oil-hardening tool steel in flat bar form.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eO1 tool steel flat stock is machined in the annealed condition using standard high-speed or carbide tooling; cutting fluids are recommended to extend tool life and maintain surface finish. Heat treatment to working hardness requires oil quenching and should be performed by a qualified heat treater following established time-temperature guidelines for AISI O1. Always allow the bar to reach ambient temperature before precision grinding or measuring. Personal protective equipment, including eye protection and cut-resistant gloves, is required when sawing or grinding tool steel.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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 Type O1 Oil Hardening\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 6 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 0.010 to 0.015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: plus 0.010 to 0.015 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\u003eEdge Squareness\u003c\/strong\u003e: 0.003 inches per inch on all edges\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 11.47 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31231200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 57011\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542425108786,"sku":"57011","price":571.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6555d28ffd7e02d6cc316d25961d7428_fb0d4c87-743b-4f45-a890-edf933aa5de3.jpg?v=1785900193","url":"https:\/\/voomisupply.com\/products\/starrett-57011-o1-tool-steel-flat-stock-3-8x6x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}