{"product_id":"osg-1400127305-thread-forming-tap-1-4-20-unc-plug-cobalt-tin","title":"Osg 1400127305 Thread Forming Tap 1\/4-20 Unc Plug Cobalt Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400127305 is a thread forming tap designed for right-hand, through-hole threading in a 1\/4-20 UNC configuration. Part of the HY-PRO NRT series, it is constructed from cobalt high-speed steel and finished with a titanium nitride (TiN) coating for extended tool life under demanding conditions. The plug chamfer style — with 4 to 4.5 chamfered threads — provides controlled thread engagement during the forming process. At 2.5 inches overall length with a 0.594-inch thread length and a shank diameter of 0.255 inches, this tap is sized for precision work in a standard machine tapping setup. It carries an H6 thread limit for close-tolerance applications. Machinists and tool and die professionals rely on this tap for consistent thread forming without chip generation.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for through-hole threading operations in a range of ferrous and non-ferrous workpiece materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. It is appropriate for both CNC machining centers and manual tapping operations where a plug-style forming tap is required. The H6 thread limit makes it a strong choice for applications where dimensional accuracy and thread consistency are critical. No coolant-through capability is present, so external cutting fluid or tapping lubricant application is standard practice for this tool.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 UNC right-hand thread forming configuration for through-hole applications\u003c\/li\u003e\n  \u003cli\u003eCobalt construction provides hardness and heat resistance for difficult materials including hardened and stainless steel\u003c\/li\u003e\n  \u003cli\u003eTiN coating reduces friction and extends tool life across high-volume tapping cycles\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer (4 to 4.5P) supports gradual thread engagement and smooth forming action\u003c\/li\u003e\n  \u003cli\u003eH6 thread limit maintains tight tolerances for precision threaded connections\u003c\/li\u003e\n  \u003cli\u003eChipless forming action eliminates chip evacuation concerns in blind and through-hole applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole thread forming in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Material application codes P and N confirm suitability across a broad range of metal types commonly encountered in machining and fabrication environments.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require adequate lubrication — apply an appropriate tapping fluid or cutting oil before and during use to reduce tool wear and improve thread quality. Ensure the tap is properly aligned with the drilled hole before engagement to prevent tap breakage, especially in harder materials. Secure the workpiece firmly and set spindle speed according to the workpiece material and tap manufacturer recommendations. Do not use this tap in blind holes unless tapping depth is confirmed to exceed the minimum required by the thread specification.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 20\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: 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\u003eThread Limit\u003c\/strong\u003e: H6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.594 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.933 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: Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Materials\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: HY-PRO NRT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.033 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: 1400127305\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51739065876786,"sku":"1400127305","price":39.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/37663b7279022381d62b23e6f82479f2.jpg?v=1788808794","url":"https:\/\/voomisupply.com\/products\/osg-1400127305-thread-forming-tap-1-4-20-unc-plug-cobalt-tin","provider":"Voomi Supply","version":"1.0","type":"link"}