{"product_id":"guhring-9039080063500-spiral-point-tap-1-4-28-unf-tin","title":"Guhring 9039080063500 Spiral Point Tap 1\/4-28 Unf Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9039080063500 is a spiral point tap designed for through-hole threading in 1\/4-28 UNF applications. Built from High-Speed Steel-E-PM (powder metallurgy HSS) with a TiN (titanium nitride) coating, this tap delivers extended tool life and reduced friction in demanding materials. The plug chamfer provides gradual thread engagement, and the 3-flute geometry pushes chips forward ahead of the cutting zone, making it well-suited for through-hole work. The 2B class of fit produces standard commercial-tolerance threads. Overall length is 2.5 inches with a thread length of 0.63 inches. Licensed machinists, pipefitters, and maintenance technicians working in precision threading operations are the primary installers.\u003c\/p\u003e\u003cp\u003eThis tap is rated for threading stainless steel and similarly tough ferrous materials where tool wear is a common issue. The H3\/H4 thread limit designation suits 2B-class through-hole work at 1\/4-28 UNF. It is used in production and maintenance settings where consistent thread quality in hard-to-machine materials is required. The right-hand thread direction and spiral point style are standard for machine tapping operations, though the tap can also be used with a tap handle in manual applications where torque control is carefully managed.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSpiral point (gun tap) geometry pushes chips forward, ideal for through-hole threading\u003c\/li\u003e\n\u003cli\u003eHigh-Speed Steel-E-PM substrate provides superior wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces friction and extends tool life in stainless steel and hard alloys\u003c\/li\u003e\n\u003cli\u003ePlug chamfer (3-5 thread lead) allows gradual cutting engagement\u003c\/li\u003e\n\u003cli\u003eH3\/H4 thread limit produces 2B-class fits for standard commercial thread tolerance\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, no coolant-through requirement, non-interrupted thread design\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for through-hole threading of 1\/4-28 UNF threads in stainless steel and comparable hard materials. Fits standard 1\/4-inch tap holders and collet chucks sized for a 0.255-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachine tapping is the preferred method; use a tapping-rated CNC machine or drill press with a floating tap holder to prevent breakage from misalignment. Ensure the workpiece is securely fixtured and the pilot hole diameter is correct for a 2B-class 1\/4-28 UNF thread before beginning. Apply a suitable cutting fluid or tapping compound, particularly when working in stainless steel, to reduce heat buildup and galling. Follow shop safety practices and applicable OSHA machine-guarding requirements when operating tapping equipment.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\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: 28\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: 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\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle\u003c\/strong\u003e: Spiral Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel-E-PM (Powder Metallurgy HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.63 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.551 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 0.0357 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\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: 3908\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 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: 9039080063500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51732670906674,"sku":"9039080063500","price":42.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8dc58a6102ee0c095303c61539e1162e_3830429b-b20e-49c5-8819-fbbd6a309c1b.jpg?v=1788745566","url":"https:\/\/voomisupply.com\/products\/guhring-9039080063500-spiral-point-tap-1-4-28-unf-tin","provider":"Voomi Supply","version":"1.0","type":"link"}