{"product_id":"sandvik-coromant-8248381-thread-forming-tap-3-8-16-unc-2b","title":"Sandvik Coromant 8248381 Thread Forming Tap 3\/8-16 Unc 2B","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 8248381 is a thread forming tap designed for creating internal threads in ductile metals without cutting or removing material. Part of the CoroTap 400 series, this tap uses a modified bottoming chamfer with 2-3 chamfered threads, allowing it to work close to the bottom of a blind hole. It is manufactured from powder-metallurgy high-speed steel and coated with titanium nitride for improved wear resistance and tool life. With an overall length of 3.937 inches and a tapping depth of 1.535 inches, it is sized for 3\/8-16 UNC threads to a 2B class of fit. Licensed machinists and CNC programmers working in ferrous and non-ferrous machining environments typically spec and install this tool.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for both blind hole threading and through-hole threading applications in materials classified under grades P, M, N, and S, covering steels, stainless steels, aluminum alloys, and heat-resistant superalloys. The T400-XM150AE series is commonly used in production machining environments where thread quality, tool consistency, and reduced scrap rates are priorities. Its form-tapping action is particularly effective in softer, ductile materials where cold-forming produces stronger threads than cut tapping.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eModified bottoming chamfer with 2-3 chamfered threads for close-to-bottom reach in blind holes\u003c\/li\u003e\n  \u003cli\u003ePowder-metallurgy high-speed steel construction for consistent grain structure and edge toughness\u003c\/li\u003e\n  \u003cli\u003eTitanium nitride coating reduces friction and extends tool life in production runs\u003c\/li\u003e\n  \u003cli\u003e6 oil grooves support lubrication distribution during the forming process\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, 3\/8-16 UNC, 2B class of fit\u003c\/li\u003e\n  \u003cli\u003eCompatible with blind hole and through-hole threading applications across multiple material grades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in materials with application codes P, M, N, and S, including steels, stainless steels, non-ferrous metals, and heat-resistant superalloys. Suited for blind hole and through-hole threading operations requiring a 3\/8-16 UNC, 2B class of fit thread form.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require adequate lubrication or cutting fluid at the point of contact; use a lubricant rated for the specific workpiece material. Always ensure the tap is properly aligned with the pre-drilled forming hole, as form taps require a larger pilot hole diameter than cut taps for the same thread size. Power down or de-energize the machine spindle before installing or removing the tap from the holder. Follow applicable shop safety protocols and machine tool manufacturer guidelines during setup and operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2-3P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel-PM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Titanium Nitride\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.937 inches (100.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.8386 inches (21.30 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.535 inches (39.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.286 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil Grooves\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C125\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application Codes\u003c\/strong\u003e: P, M, N, S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading, Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: T400-XM150AE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrade Name\u003c\/strong\u003e: CoroTap 400\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\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: SANDVIK COROMANT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8248381\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51727154708786,"sku":"8248381","price":209.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c2e5673f30d4044fd8ffecad028ce420.jpg?v=1788674100","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-8248381-thread-forming-tap-3-8-16-unc-2b","provider":"Voomi Supply","version":"1.0","type":"link"}