{"product_id":"guhring-9039160285750-spiral-point-tap-1-1-8-7-unc","title":"Guhring 9039160285750 Spiral Point Tap 1-1\/8-7 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9039160285750 is a spiral point tap designed for through-hole threading applications in a wide range of ferrous and non-ferrous materials. It cuts a 1-1\/8-7 UNC thread with a right-hand direction and a plug chamfer, making it well suited for initiating threads in through-hole workpieces. Built from cobalt high-speed steel and coated with titanium nitride (TiN), the tap delivers improved wear resistance and heat tolerance compared to standard HSS tooling. The 4-flute geometry and H6\/H7 thread limit hold a Class 2B fit tolerance. Overall length is 5.441 inches, with a shank diameter of 0.896 inches. Machinists and toolroom professionals install this tap in CNC machining centers, turret lathes, or manual drill presses equipped with a tapping head.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for through-hole threading in production and job-shop environments. The TiN coating reduces built-up edge and extends tool life when running at elevated speeds. Rated material applications include aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, stainless steel, and steel, making it a versatile choice across general metalworking operations. The plug chamfer — typically 3 to 5 lead threads — allows the tap to start easily in a through-hole without requiring a bottoming or semi-bottoming profile. This is a GUHRING Series 3916 tap.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-1\/8-7 UNC thread form with right-hand cutting direction\u003c\/li\u003e\n  \u003cli\u003eCobalt HSS construction for improved heat and wear resistance over standard HSS\u003c\/li\u003e\n  \u003cli\u003eTiN coating reduces friction and extends tool life in ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003e4-flute spiral point design pushes chips forward, ideal for through-hole applications\u003c\/li\u003e\n  \u003cli\u003eH6\/H7 thread limit holds Class 2B fit tolerance\u003c\/li\u003e\n  \u003cli\u003eOverall length of 5.441 inches; shank diameter of 0.896 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole threading operations across aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, stainless steel, and steel. Part of the GUHRING Series 3916 tap line.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or toolroom technicians using a tapping head, tap wrench, or CNC rigid tapping cycle. Ensure the workpiece is securely fixtured and the spindle is properly aligned before starting. Use appropriate cutting fluid for the workpiece material to reduce heat and extend tap life. Inspect the tap and holder for runout before use, as misalignment is a leading cause of tap breakage at larger diameters.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/8-7\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: H6\/H7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.441 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.896 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3916\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.503 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: 9039160285750\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51727126462770,"sku":"9039160285750","price":301.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6ecca0665ec0e3f82ddd0380382c6536.jpg?v=1788673777","url":"https:\/\/voomisupply.com\/products\/guhring-9039160285750-spiral-point-tap-1-1-8-7-unc","provider":"Voomi Supply","version":"1.0","type":"link"}