{"product_id":"osg-1400106005-thread-forming-tap-4-40-unc-plug-cobalt-tin","title":"Osg 1400106005 Thread Forming Tap 4-40 Unc Plug Cobalt Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400106005 is a thread forming tap in the HY-PRO NRT series, designed for cold-form tapping of internal threads without chip generation. It produces a 4-40 UNC right-hand thread using a plug chamfer with 4 to 4.5 chamfered threads for progressive thread engagement. Constructed from cobalt high-speed steel and finished with a TiN coating, it delivers increased wear resistance and longer tool life in demanding applications. The H4 thread limit provides consistent dimensional control. Overall length is 1.875 inches with a shank diameter of 0.141 inches. This tap is installed by machinists, tool and die makers, and maintenance technicians working in precision threading operations.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for through-hole threading applications across a broad range of metallic workpiece materials. It is rated for use in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The cold-forming action displaces material rather than cutting it, resulting in stronger thread form and no chips to clear from the hole. Typical install scenarios include production machining, MRO work, and precision fabrication where 4-40 UNC threads are required in blind or through configurations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread forming (chipless) design produces stronger threads by material displacement\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 between sharpenings\u003c\/li\u003e\n  \u003cli\u003eH4 thread limit ensures dimensional accuracy for 4-40 UNC threads\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer with 4 to 4.5 chamfered threads for gradual thread engagement\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction compatible with standard tapping equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole thread forming in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum workpieces requiring 4-40 UNC internal threads. Material application codes P and N apply per the manufacturer classification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require proper lubrication and tapping fluid matched to the workpiece material. Ensure the tap is driven with a calibrated torque-limiting holder or tapping head to prevent overload and tool breakage. Power down spindle and secure the workpiece before tap changes. Thread forming taps are not interchangeable with cutting taps in the same pre-drilled hole size — consult the manufacturer drill size chart for the correct forming tap pilot hole diameter before drilling.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\u003eChamfer Style\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 4 to 4.5P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HY-PRO NRT (14001)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.005 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: 1400106005\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730249154866,"sku":"1400106005","price":36.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/da75da5bc5dd2f1cbe456564d9f3a96a.jpg?v=1788714096","url":"https:\/\/voomisupply.com\/products\/osg-1400106005-thread-forming-tap-4-40-unc-plug-cobalt-tin","provider":"Voomi Supply","version":"1.0","type":"link"}