{"product_id":"guhring-9039900035050-spiral-point-sti-tap-6-32-unc","title":"Guhring 9039900035050 Spiral Point Sti Tap 6-32 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9039900035050 is a spiral point STI tap designed for through-hole threading operations in demanding shop environments. Built from cobalt high-speed steel with a titanium nitride (TiN) coating, this tap delivers extended tool life when cutting stainless steel and alloy steels. It is sized for 6-32 UNC threads, runs 3 flutes with a plug chamfer, and meets a 3B class of fit. Overall length is 2.38 inches with a thread length of 0.335 inches. The spiral point geometry pushes chips forward through the hole, making it well-suited for through-hole applications where chip evacuation is critical. Machinists, toolroom technicians, and maintenance professionals rely on this tap for precision thread repair and production threading.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for through-hole threading in stainless steel and steel workpieces. The STI (Screw Thread Insert) designation means the tap cuts an oversized thread profile to accept helical wire inserts such as Heli-Coil-style thread inserts, restoring or upgrading thread strength in stripped or understrength bores. It fits standard tap wrenches and CNC tapping heads configured for the 0.194-inch shank diameter. Typical applications include thread repair on machinery housings, fabrication of tapped holes in stainless steel components, and production threading in medium to high-volume operations where a durable coated tap reduces tool change frequency.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt HSS construction resists heat and wear when tapping stainless steel and alloy steels\u003c\/li\u003e\n  \u003cli\u003eTitanium nitride (TiN) coating reduces friction and extends tool life between regrinds\u003c\/li\u003e\n  \u003cli\u003eSpiral point geometry pushes chips ahead of the tap, keeping through-holes clear during cutting\u003c\/li\u003e\n  \u003cli\u003eSTI thread profile cuts oversized threads sized to accept standard wire thread inserts\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer provides a gradual lead-in for balanced cutting action in through-hole applications\u003c\/li\u003e\n  \u003cli\u003e3B class of fit meets standard tolerance requirements for general-purpose threaded assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style STI tap for through-hole threading operations requiring 6-32 UNC thread inserts in stainless steel and steel materials; part of GUHRING Series 3990.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician using a properly aligned tap wrench, tapping arm, or CNC tapping head. Ensure the workpiece is securely fixtured and the spindle or wrench is aligned square to the bore before beginning. Use a cutting fluid or tapping compound appropriate for the workpiece material, particularly when tapping stainless steel, to reduce heat buildup and prevent galling. Do not exceed the rated torque capacity of the tap for the thread size, and back off periodically to break chips if tapping manually.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Size\u003c\/strong\u003e: 6-32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: STI UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\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\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Stainless Steel, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.38 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.335 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.194 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.152 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3990\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: 9039900035050\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51748535697714,"sku":"9039900035050","price":71.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2d1c5045ee2682ce4d34691072812f83.jpg?v=1788894970","url":"https:\/\/voomisupply.com\/products\/guhring-9039900035050-spiral-point-sti-tap-6-32-unc","provider":"Voomi Supply","version":"1.0","type":"link"}