{"product_id":"osg-2864408-thread-forming-tap-2-56-unc-bottoming-ticn-hss","title":"Osg 2864408 Thread Forming Tap 2-56 Unc Bottoming Ticn Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 2864408 is a thread forming tap in the HY-PRO NRT series, designed for cutting 2-56 UNC internal threads with a 2B class of fit. Unlike cutting taps, thread forming taps displace material rather than cutting it, producing stronger threads with no chips to clear. This bottoming-style tap features a TiCN coating over a high-speed steel body, providing increased surface hardness and lubricity for extended tool life. With a 1.5 to 2 thread chamfer, it is suited for threading close to the bottom of blind holes. Overall length is 1.75 inches, with a shank diameter of 0.141 inches. It is installed by machinists and toolroom technicians on lathes, drill presses, and CNC tapping setups.\u003c\/p\u003e\n\u003cp\u003eThis tap is rated for blind hole threading applications in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel. The bottoming chamfer allows the tap to form full threads very close to the bottom of a blind hole, making it a practical choice in tight-clearance assemblies where thread depth is critical. At 56 threads per inch on a No. 2 screw diameter, this tap is commonly used in precision instrument work, electronics enclosures, and small mechanical assemblies requiring fine, high-strength threaded holes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread forming design displaces material for chip-free threading and stronger thread forms\u003c\/li\u003e\n  \u003cli\u003eTiCN coating increases surface hardness and reduces friction for extended tool life\u003c\/li\u003e\n  \u003cli\u003eBottoming chamfer with 1.5 to 2 thread lead for threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction handles a range of ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, 2B class of fit for standard internal thread tolerance\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design; suitable for conventional tapping setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel workpieces. Designed for blind hole threading applications requiring a 2-56 UNC, 2B class of fit internal thread.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require a properly sized forming tap drill hole, which is larger than a standard cut-tap drill size — consult the OSG or tooling manufacturer chart for the correct forming drill diameter for 2-56 UNC before use. Secure the workpiece and ensure the tap is started perpendicular to the hole to avoid thread distortion. Apply appropriate tapping fluid for the workpiece material; aluminum and steel each benefit from different lubricants. Follow shop safety procedures and power down any tapping machine before changing or inspecting the tap.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 2-56\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 1.5 to 2P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 56\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.437 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.476 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.110 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Low-Carbon Steel, Medium-Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HY-PRO NRT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.009 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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 2864408\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51736038736178,"sku":"2864408","price":60.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ec01f4bbd06e33892610ca18dc096847_cd50645e-19e3-4622-aae2-7a111b36dc64.jpg?v=1788775545","url":"https:\/\/voomisupply.com\/products\/osg-2864408-thread-forming-tap-2-56-unc-bottoming-ticn-hss","provider":"Voomi Supply","version":"1.0","type":"link"}