{"product_id":"guhring-9039370063500-1-4-20-unc-cobalt-machine-tap","title":"Guhring 9039370063500 1\/4-20 Unc Cobalt Machine Tap","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9039370063500 is a 1\/4-20 UNC cobalt machine tap designed for threading operations in demanding materials. Built with a modified bottoming chamfer and four straight flutes, it produces clean threads in both blind holes and through-holes. The FIREX coating improves wear resistance and reduces heat buildup during high-speed tapping cycles. At 2.5 inches overall length, this right-hand tap carries a Class 2B thread fit with an H4\/H5 thread limit, making it suitable for standard commercial-tolerance threaded fastener applications. It is installed and operated by machinists and tool-and-die professionals using standard tapping equipment.\u003c\/p\u003e\n\u003cp\u003eThis tap is engineered for use in abrasive materials and cast iron, where tool wear is accelerated and coating durability is critical. The modified bottoming chamfer allows threading closer to the bottom of blind holes compared to a standard taper or plug chamfer, making it a practical choice for parts with limited thread runout. Straight flute geometry is well-suited for through-hole threading and shorter blind-hole threading where chip evacuation can be managed by the application setup. Typical install scenarios include CNC machining centers, drill presses with tapping attachments, and manual tapping operations on production or repair work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFIREX coating for enhanced wear resistance and reduced friction in abrasive materials\u003c\/li\u003e\n  \u003cli\u003eCobalt construction provides heat resistance beyond standard HSS taps\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer allows threading close to the base of blind holes\u003c\/li\u003e\n  \u003cli\u003eFour-flute straight flute design suits both blind-hole and through-hole threading\u003c\/li\u003e\n  \u003cli\u003eClass 2B fit with H4\/H5 thread limit meets standard commercial thread tolerance requirements\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, 1\/4-20 UNC, compatible with standard tapping chucks and holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use in abrasive materials and cast iron per supplier specifications. Suitable for through-hole and blind-hole threading applications. Designed for use with standard 1\/4-inch tap holders and tapping chucks accepting a 0.255-inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed by machinists using standard tapping chucks, rigid tapping holders, or floating tap adapters on CNC or manual equipment. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for 1\/4-20 UNC before beginning threading. Apply appropriate cutting fluid for the work material to protect the coating and extend tool life. Do not reverse the tap under power in a rigid setup without a torque-limiting or floating holder to avoid tool breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\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: H4\/H5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: FIREX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.181 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading, Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Abrasive Material, Cast Iron\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\u003eWeight\u003c\/strong\u003e: 0.08 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3937\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: 9039370063500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51727609790770,"sku":"9039370063500","price":55.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/088b26309a9e43e2e0ce9759845b6dd2.jpg?v=1788679954","url":"https:\/\/voomisupply.com\/products\/guhring-9039370063500-1-4-20-unc-cobalt-machine-tap","provider":"Voomi Supply","version":"1.0","type":"link"}