{"product_id":"osg-1400104905-thread-forming-tap-4-40-unc-bottoming","title":"Osg 1400104905 Thread Forming Tap 4-40 Unc Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1400104905 is a thread forming tap designed for creating 4-40 UNC internal threads in blind holes. Unlike cutting taps, thread forming taps displace material rather than cut it, producing stronger threads with no chip generation. This tap features a cobalt construction with a TiN (titanium nitride) coating for extended tool life in demanding materials. It is configured with a bottoming chamfer of 1 to 1.5 threads, allowing thread production close to the bottom of a blind hole. The 3B class of fit and H3 thread limit make it suitable for close-tolerance threading applications. Machinists and tool-and-die professionals use this tap in production and repair operations.\u003c\/p\u003e\u003cp\u003eThis tap is suited for blind hole threading in a range of materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The bottoming chamfer configuration makes it well matched for applications where thread depth must be maximized within a limited bore depth. The right-hand thread direction and standard UNC form fit conventional tapping setups on manual or CNC machines. It belongs to OSG series 14001, marketed under the HY-PRO NRT trade name.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming design displaces material rather than cutting, producing stronger threads and eliminating chips\u003c\/li\u003e\n\u003cli\u003eCobalt construction provides heat and wear resistance in tough alloys and stainless steel\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces friction and extends tool life across a broad material range\u003c\/li\u003e\n\u003cli\u003eBottoming chamfer (1 to 1.5 threads) maximizes usable thread depth in blind holes\u003c\/li\u003e\n\u003cli\u003e3B class of fit with H3 thread limit for close-tolerance applications\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction compatible with standard tapping equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for blind hole threading operations producing 4-40 UNC right-hand internal threads in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum workpieces.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed and operated by machinists or tool-and-die technicians using a compatible tap wrench, tapping head, or CNC tapping cycle. Ensure the spindle speed and feed rate are appropriate for the workpiece material before engaging the tap. Because this is a thread forming tap, the pilot hole diameter must be sized correctly for forming operations — use the forming tap drill chart for the specific material; a standard cut-tap drill size will produce an incorrect fit. Always apply appropriate tapping fluid and verify machine setup before beginning the tapping cycle.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\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: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 1 to 1.5 threads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 40\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: 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.295 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.559 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: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN (Titanium Nitride)\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Alloy Steel, Aluminum, Carbon Steel, Die Steel, Hardened Steel, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 14001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade Name\u003c\/strong\u003e: HY-PRO NRT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 1400104905\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51737907167538,"sku":"1400104905","price":39.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e52cc45116a3206b39bd094cbb4db04f.jpg?v=1788794996","url":"https:\/\/voomisupply.com\/products\/osg-1400104905-thread-forming-tap-4-40-unc-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}