{"product_id":"kennametal-4131221-spiral-point-tap-5-8-11-unc-hss","title":"Kennametal 4131221 Spiral Point Tap 5\/8-11 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4131221 is a spiral point tap designed for right-hand threading in through-hole applications. Built from high speed steel with an oxide finish, it cuts a 5\/8-11 UNC thread to a 3B class of fit with an H3 thread limit. The plug chamfer eases entry and distributes cutting load progressively, making this tap well-suited for production environments where consistent thread quality is required. Thread length measures 1.813 inches and overall length is 3.813 inches. Licensed machinists and tool-room technicians working in metalworking shops are the primary users of this tool.\u003c\/p\u003e\n\u003cp\u003eThis tap is rated for use in cast iron, ductile iron, stainless steel, and steel. The spiral point design pushes chips forward ahead of the tap, which is the preferred approach for through-hole threading where chip evacuation must be positive and reliable. It is a practical choice for job shops, maintenance departments, and production lines cutting standard UNC threads in ferrous materials. The 3-flute geometry balances cutting efficiency with thread finish across these material groups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/8-11 UNC thread form, right-hand direction, 3B class of fit\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit for consistent fit tolerance across production runs\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer for progressive load distribution on thread entry\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction handles cast iron, ductile iron, stainless steel, and steel\u003c\/li\u003e\n  \u003cli\u003eOxide finish provides mild lubricity and corrosion resistance during storage and use\u003c\/li\u003e\n  \u003cli\u003eSpiral point geometry pushes chips forward, optimized for through-hole tapping without coolant-through requirement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole tapping operations in ferrous materials including cast iron, ductile iron, stainless steel, and steel where a 5\/8-11 UNC 3B thread is specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed by a machinist or tool-room technician in a drill press, CNC machining center, or tapping head rated for the required torque range. Ensure the workpiece is securely fixtured and the tap is aligned axially with the drilled hole before engagement. Use an appropriate cutting fluid or tapping compound for the material being threaded, especially when working with stainless steel. Inspect the tap for chipping or wear before each use and replace if thread quality degrades.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-11\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\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\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: High Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.813 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.813 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.480 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Type\u003c\/strong\u003e: Fractional Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Cast Iron, Ductile Iron, Stainless Steel, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\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: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4131221\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51755802165554,"sku":"4131221","price":115.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bcb508376309001e75c341a6224806d8.jpg?v=1788959844","url":"https:\/\/voomisupply.com\/products\/kennametal-4131221-spiral-point-tap-5-8-11-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}