{"product_id":"guhring-9048813127000-spiral-flute-tap-unc-1-2-13-cobalt","title":"Guhring 9048813127000 Spiral Flute Tap Unc 1\/2-13 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9048813127000 is a spiral flute tap designed for blind hole threading in a wide range of metals. It cuts a 1\/2-13 UNC right-hand thread to a 2B\/3B class of fit using a modified bottoming chamfer, which provides thread engagement close to the bottom of a blind hole. Manufactured from cobalt high-speed steel and finished with GUHRING Ignator coating, this tap handles demanding materials including stainless steel, heat-treated steel, and cast iron. The 40-degree helix angle promotes efficient chip evacuation in these tougher applications. It is used by machinists, tool and die makers, and maintenance mechanics in production and job-shop environments.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for blind hole threading operations in CNC machining centers, drill presses, and tapping arms where controlled chip removal is critical. The fast flute style and 40-degree helix angle pull chips up and out of the hole during the cutting cycle, reducing the risk of chip packing in closed-bottom bores. It is appropriate for threading alloy steel, alloy tool steel, aluminum alloy, case-hardened steel, cast iron, ductile iron, free-cutting steel, heat-treated steel, malleable cast iron, stainless steel, structural steel, and tool steel. The H3 thread limit classification ensures a consistent fit tolerance across production runs requiring 2B or 3B class of fit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2-13 UNC thread form with modified bottoming chamfer for near-bottom thread engagement in blind holes\u003c\/li\u003e\n  \u003cli\u003eCobalt HSS construction resists heat and wear in hard and abrasive materials\u003c\/li\u003e\n  \u003cli\u003eIgnator surface treatment reduces friction and extends tool life in demanding alloys\u003c\/li\u003e\n  \u003cli\u003e40-degree right-hand helix angle evacuates chips efficiently from blind holes\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit holds consistent 2B\/3B class of fit tolerance\u003c\/li\u003e\n  \u003cli\u003eThree flutes provide a balance of chip space and core strength for threading tough workpiece materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole threading in alloy steel, alloy tool steel, aluminum alloy, case-hardened steel, cast iron, ductile iron, free-cutting steel, heat-treated steel, malleable cast iron, stainless steel, structural steel, and tool steel. Part of GUHRING Series 4881.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists and tooling technicians using standard tap holders, floating tap holders, or rigid tapping chucks sized for the 0.367-inch shank diameter. Ensure the tap is properly aligned to the pre-drilled hole to avoid tap breakage or thread distortion. Use appropriate cutting fluid for the workpiece material, as cobalt taps in hard alloys benefit from sulfur-based or synthetic cutting oils. Confirm tapping depth does not exceed the rated tapping depth of 0.422 inches to protect the tap and maintain thread quality.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13\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: 13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\/3B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Fast\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\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\/Finish\u003c\/strong\u003e: Ignator\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.381 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.787 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.422 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.367 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.275 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 0.0769 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 4881\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.14 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: GUHRING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9048813127000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51738653229362,"sku":"9048813127000","price":74.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed18124a2fea51be3bbdf374250e0745_0fdd3949-80ca-44ae-9ae9-875e708135e3.jpg?v=1788802376","url":"https:\/\/voomisupply.com\/products\/guhring-9048813127000-spiral-flute-tap-unc-1-2-13-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}