{"product_id":"osg-1400108305-thread-forming-tap-5-40-unc-plug-cobalt-tin","title":"Osg 1400108305 Thread Forming Tap 5-40 Unc Plug Cobalt Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400108305 is a thread forming tap designed for producing internal threads without cutting, using material displacement to create strong, chip-free threads. Built from cobalt high-speed steel with a titanium nitride (TiN) coating, this plug-chamfer tap is engineered for demanding threading applications in hard and abrasive materials. It carries a 5-40 UNC thread form, H3 thread limit, and a Class 3B fit, making it suitable for precision thread production in through-hole applications. With an overall length of 1.938 inches and a tapping depth of 0.626 inches, it fits standard toolholding setups used in machining and fabrication environments. Licensed machinists and toolroom professionals are the primary users of this tap.\u003c\/p\u003e\n\u003cp\u003eThis tap is rated for through-hole threading in a broad range of materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. Its cobalt construction provides heat resistance during high-speed tapping operations, and the TiN coating extends tool life by reducing friction and adhesion. The HY-PRO NRT series designation indicates it is optimized for roll-form tapping where chip evacuation is not a concern and thread integrity is critical. It is well suited for production machining, maintenance and repair operations, and precision fabrication work requiring a tight Class 3B fit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread forming design produces chip-free threads through material displacement, eliminating the risk of chip packing in blind or through holes\u003c\/li\u003e\n  \u003cli\u003eCobalt high-speed steel construction provides superior heat and wear resistance compared to standard HSS\u003c\/li\u003e\n  \u003cli\u003eTiN coating reduces friction, extends tool life, and improves performance in stainless steel and hardened steel\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer with 4 to 4.5 chamfered threads allows easy thread starting in through-hole applications\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and Class 3B fit ensure precise, consistent thread geometry for high-tolerance assemblies\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, compatible with standard tapping heads and CNC toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces requiring a 5-40 UNC, Class 3B internal thread. Compatible with material application codes P and N per OSG series classifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require proper alignment and appropriate tapping fluid or cutting oil for the workpiece material — dry tapping is not recommended. Power down and secure the workpiece before tap engagement. Use a torque-limiting tapping head or CNC rigid tapping cycle to prevent tap breakage, especially in harder materials. Inspect the tap for wear or chipping before each use, as a damaged tap can produce out-of-tolerance threads.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5-40\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: 40\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\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.938 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.299 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.626 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\u003eCoolant Through\u003c\/strong\u003e: No\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: 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\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: 1400108305\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730895208754,"sku":"1400108305","price":36.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6e8e3782938d12c05df0ed10d509ae2b.jpg?v=1788724485","url":"https:\/\/voomisupply.com\/products\/osg-1400108305-thread-forming-tap-5-40-unc-plug-cobalt-tin","provider":"Voomi Supply","version":"1.0","type":"link"}