{"product_id":"guhring-9039770142880-spiral-flute-tap-9-16-12-unc","title":"Guhring 9039770142880 Spiral Flute Tap 9\/16-12 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9039770142880 is a spiral flute tap designed for blind hole threading in alloyed and unalloyed steel. Part of the Series 3977 line, it cuts a 9\/16-12 UNC right-hand thread to a 2B class of fit. The tap is manufactured from cobalt high-speed steel and coated with TiN (titanium nitride) for improved wear resistance and longer tool life. With a 40-degree helix angle and a fast flute style, it efficiently evacuates chips up and out of blind holes. Overall length is 3.591 inches. Machinists and tool-and-die tradespeople use this tap in CNC and manual tapping applications on ferrous workpieces.\u003c\/p\u003e\n\u003cp\u003eThis bottoming tap is suited for threading to the full depth of blind holes where a plug or taper tap cannot reach the required thread length. The bottoming chamfer leaves only 1 to 2 thread leads uncut at the bottom, making it a finishing tap typically used after a plug tap has started the thread. It is appropriate for production and maintenance machining environments handling medium-carbon, alloy, and structural steels. Coolant-through capability is not featured on this tool, so standard flood or mist coolant delivery at the spindle is recommended.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt high-speed steel construction for heat and wear resistance in ferrous materials\u003c\/li\u003e\n  \u003cli\u003eTiN coating reduces friction and extends tool life in repetitive threading operations\u003c\/li\u003e\n  \u003cli\u003e40-degree helix angle with fast flute style promotes efficient chip evacuation in blind holes\u003c\/li\u003e\n  \u003cli\u003eBottoming chamfer allows threading to the full depth of blind hole applications\u003c\/li\u003e\n  \u003cli\u003eRight-hand flute and right-hand thread direction for standard machine tapping setups\u003c\/li\u003e\n  \u003cli\u003eH5\/H6 thread limit provides controlled oversize tolerance for 2B class of fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole threading in alloyed and unalloyed steel workpieces; compatible with standard tapping chucks and holders sized for a 0.429-inch shank diameter. Thread form is 9\/16-12 UNC to 2B class of fit.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap should be installed by a qualified machinist following established tapping procedures. Ensure the spindle and workpiece are secure and the machine is de-energized before changing tooling. Use a tapping lubricant or cutting fluid appropriate for steel to protect the cutting edges and maintain thread quality. Verify shank seating and chuck torque per the machine manufacturer specifications before initiating the tapping cycle.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16-12\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: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H5\/H6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Fast Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Alloyed and Unalloyed Steel\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\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.591 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.429 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.322 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3977\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 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: 9039770142880\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51728611836210,"sku":"9039770142880","price":92.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a1be8efefc37322f2b61c6056a6ced5f.jpg?v=1788693964","url":"https:\/\/voomisupply.com\/products\/guhring-9039770142880-spiral-flute-tap-9-16-12-unc","provider":"Voomi Supply","version":"1.0","type":"link"}