{"product_id":"guhring-9039190079380-spiral-flute-tap-5-16-18-unc","title":"Guhring 9039190079380 Spiral Flute Tap 5\/16-18 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9039190079380 is a spiral flute tap designed for blind hole threading in alloyed and unalloyed steel. It cuts a 5\/16-18 UNC right-hand thread to a 2B class of fit and produces a thread length of 0.551 inches per pass. The modified bottoming chamfer allows threading closer to the bottom of a blind hole than a standard plug tap. Built from cobalt high-speed steel with a bright, uncoated finish, it carries a 40-degree helix angle that efficiently evacuates chips up and out of the hole during the threading operation. Machinists and toolroom technicians use this tap in CNC machining centers, turret lathes, and manual drill presses.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for production and maintenance threading operations in alloyed steel and unalloyed steel workpieces. The modified bottoming chamfer makes it the correct choice when full thread depth must be achieved near the bottom of a blind bore. The fast flute style and 40-degree right-hand helix promote chip flow in materials that produce continuous or stringy chips. Thread limit H4\/H5 accommodates standard tolerance requirements for 2B fit fastener applications in both shop and field environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eModified bottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003e40-degree right-hand helix for efficient upward chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCobalt HSS construction provides heat and wear resistance in steel applications\u003c\/li\u003e\n  \u003cli\u003e2B class of fit with H4\/H5 thread limit for standard UNC tolerance requirements\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish suitable for use with cutting oils and water-soluble coolants\u003c\/li\u003e\n  \u003cli\u003e3 flutes with fast flute style for consistent chip flow in ductile materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole threading in alloyed steel and unalloyed steel workpieces requiring a 5\/16-18 UNC right-hand thread. Thread limit H4\/H5 is compatible with standard 2B tolerance class applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed and driven by a qualified machinist or toolroom technician. Before threading, verify the pilot hole diameter matches the required tap drill size for a 5\/16-18 UNC thread and that the workpiece is securely fixtured. Apply an appropriate cutting fluid for steel; do not run this tap dry. When tapping on power equipment, use a tapping head or torque-limiting chuck to prevent tap breakage in blind holes.\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\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\u003eNumber of Flutes\u003c\/strong\u003e: 3\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\u003eChamfer\u003c\/strong\u003e: Modified 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 Steel, 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: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.551 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-23\/32 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\u003eSquare Size\u003c\/strong\u003e: 0.238 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 18\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: 3919\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 9039190079380\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51737511756082,"sku":"9039190079380","price":49.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4ea8e0d61927a6e33601c08e29a44e6d.jpg?v=1788789507","url":"https:\/\/voomisupply.com\/products\/guhring-9039190079380-spiral-flute-tap-5-16-18-unc","provider":"Voomi Supply","version":"1.0","type":"link"}