{"product_id":"guhring-9043730028450-spiral-flute-tap-unc-bottoming-ticn","title":"Guhring 9043730028450 Spiral Flute Tap Unc Bottoming Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9043730028450 is a spiral flute tap designed for threading blind holes in a range of materials, including hardened steel. It cuts a 4-40 UNC thread with a right-hand flute and right-hand thread orientation, driven by a 15-degree helix angle and a slow flute style suited to controlled chip evacuation in deep or restricted cavities. The bottoming chamfer allows threading close to the bottom of a blind hole, making it the right tool when full thread depth is required in tight spaces. Class of fit is 2BX, supported by thread limits H3 and H4. The TiCN coating extends tool life when cutting abrasive or hardened workpiece materials. Machinists and toolroom technicians working in production or maintenance environments are the primary users.\u003c\/p\u003e\u003cp\u003eThis tap is used for blind hole threading operations on 4-40 UNC threaded features in ferrous and hardened steel components. It is well-suited for CNC tapping centers, manual drill presses with tapping attachments, and bench tapping setups where precise depth control is essential. The bottoming chamfer style is selected when through-tapping is not possible and maximum thread engagement depth is required. Applications span precision machining, maintenance repair, and OEM production work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for maximum thread depth in blind holes\u003c\/li\u003e\n\u003cli\u003eTiCN coating for improved wear resistance on hardened steel and abrasive materials\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction provides toughness across a range of cutting conditions\u003c\/li\u003e\n\u003cli\u003e15-degree helix angle with slow flute style for controlled chip flow\u003c\/li\u003e\n\u003cli\u003eThread limits H3 and H4 support 2BX class of fit tolerances\u003c\/li\u003e\n\u003cli\u003eCoolant-through: No — compatible with standard flood or mist coolant delivery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 4-40 UNC right-hand threads in blind hole applications on hardened steel and similar ferrous materials. Part of GUHRING Series 4373.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed and operated by machinists or tool and die technicians using a tap wrench, tapping head, or CNC rigid tapping cycle. Before use, ensure the drilled hole diameter and depth are correct for the 4-40 UNC thread specification being cut. Secure the workpiece fully before tapping to prevent movement under torque. Follow the tap manufacturer's recommended cutting fluid or coolant type for the workpiece material to maximize tool life and thread quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\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: 40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2BX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3, H4\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\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Slow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 15 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.2047 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1410 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.4960 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.7087 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.7090 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.1100 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: 4373\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 9043730028450\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51727254782258,"sku":"9043730028450","price":63.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66dde40f69adac045144433d917a1aa7.jpg?v=1788675489","url":"https:\/\/voomisupply.com\/products\/guhring-9043730028450-spiral-flute-tap-unc-bottoming-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}