{"product_id":"guhring-9039990254000-spiral-flute-tap-1-12-unf-tin","title":"Guhring 9039990254000 Spiral Flute Tap 1-12 Unf Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9039990254000 is a spiral flute tap designed for blind hole threading in demanding materials, including stainless steel. It cuts a 1-12 UNF right-hand thread using four flutes with a 40-degree helix angle, which efficiently evacuates chips back out of the hole during cutting. The modified bottoming chamfer allows threading close to the bottom of a blind hole. Constructed from powdered metal and finished with a TiN coating, this tap is built to handle the higher cutting forces and heat associated with hard-to-machine alloys. Overall length is 5.13 inches. Licensed machinists and tool-room technicians are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for precision threading operations in blind holes on components machined from stainless steel and similarly tough materials. The fast flute style and high helix angle make it a practical choice for CNC tapping centers and rigid-tapping setups where chip control in a confined hole is critical. The 3B class of fit produces a standard tolerance thread compatible with general-purpose fastener assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-12 UNF thread form with right-hand flute and right-hand thread direction\u003c\/li\u003e\n  \u003cli\u003e40-degree helix angle promotes reliable chip evacuation in blind holes\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer for threading near the bottom of a blind bore\u003c\/li\u003e\n  \u003cli\u003ePowdered metal construction with TiN finish for extended tool life in stainless steel\u003c\/li\u003e\n  \u003cli\u003e3B class of fit for standard-tolerance thread production\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through requirement — compatible with external flood or mist cooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole threading applications in stainless steel and other demanding materials. Part of the GUHRING Series 3999 spiral flute tap line.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by qualified machinists or toolroom technicians familiar with tapping operations. Always ensure the spindle is at a complete stop and the machine is in a safe state before loading or removing the tap from the holder. Use a rigid tapping chuck or a synchronous tapping attachment to maintain proper feed-per-revolution and avoid tap breakage. Follow the machine tool manufacturer and ANSI B94 guidelines for speeds, feeds, and cutting fluid selection appropriate to the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\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\u003eClass of Fit\u003c\/strong\u003e: 3B\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: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Powdered Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.13 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Fast\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: 3999\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 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: 9039990254000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51728609050930,"sku":"9039990254000","price":216.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/68c79866c917c15616ae4150ace63662_1e5a1ad2-6fab-41f1-92af-ee037407e9c2.jpg?v=1788693918","url":"https:\/\/voomisupply.com\/products\/guhring-9039990254000-spiral-flute-tap-1-12-unf-tin","provider":"Voomi Supply","version":"1.0","type":"link"}