{"product_id":"guhring-9048813079380-spiral-flute-tap-5-16-18-unc","title":"Guhring 9048813079380 Spiral Flute Tap 5\/16-18 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9048813079380 is a spiral flute tap designed for blind hole threading in a wide range of ferrous and non-ferrous materials. Built from cobalt high-speed steel and finished with GUHRING Ignator coating, this tap handles demanding applications including stainless steel, heat-treated steel, alloy steel, and cast iron. The 40-degree helix angle evacuates chips upward out of the hole, making it well-suited for blind hole work where chip packing is a common failure point. It carries a 5\/16-18 UNC thread form with a modified bottoming chamfer, allowing threads to be cut closer to the bottom of a blind bore than a standard plug or taper chamfer tap.\u003c\/p\u003e\n\u003cp\u003eThis tap is used in precision machining and metalworking environments where tight thread tolerances are required. With a 2B\/3B class of fit and H3 thread limit, it produces threads suitable for general-purpose fastener engagement and precision assemblies. Typical install scenarios include CNC tapping operations, manual tapping on a drill press, and production threading of parts made from structural steel, tool steel, ductile iron, malleable cast iron, aluminum alloy, and free-cutting steel. It is intended for use by machinists, tool and die makers, and maintenance technicians working in industrial or machine shop settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e40-degree right-hand helix angle for upward chip evacuation in blind holes\u003c\/li\u003e\n  \u003cli\u003eCobalt HSS construction for thermal and wear resistance in tough materials\u003c\/li\u003e\n  \u003cli\u003eIgnator finish reduces friction and extends tool life in abrasive alloys\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer allows threading close to the bottom of blind bores\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and 2B\/3B class of fit for consistent, general-purpose thread quality\u003c\/li\u003e\n  \u003cli\u003eRight-hand flute and right-hand thread in Series 4881 fast flute style\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. No coolant-through feature; suitable for use with external cutting fluid application.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap should be installed in a tapping chuck or rigid holder appropriate for the machine spindle in use. Power down and secure the workpiece before changing or setting tooling. Use a cutting fluid compatible with the workpiece material to manage heat and prolong tap life. Follow applicable shop safety and machine guarding practices when operating tapping equipment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\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: 18\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\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\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\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\u003eSeries\u003c\/strong\u003e: 4881\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.720 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.551 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.377 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.318 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.826 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.238 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 0.0556 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 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: 9048813079380\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51754430529842,"sku":"9048813079380","price":40.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed18124a2fea51be3bbdf374250e0745_d84d81a2-66f4-4159-9cc2-8a36981cb346.jpg?v=1788945289","url":"https:\/\/voomisupply.com\/products\/guhring-9048813079380-spiral-flute-tap-5-16-18-unc","provider":"Voomi Supply","version":"1.0","type":"link"}