{"product_id":"guhring-9039010254000-spiral-point-tap-1-8-unc","title":"Guhring 9039010254000 Spiral Point Tap 1-8 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9039010254000 is a spiral point tap designed for through-hole threading in steel and similar materials. It cuts a 1-8 UNC right-hand thread using a plug chamfer entry, which distributes cutting load across several leading threads for controlled engagement. Built from HSS-E cobalt high-speed steel, it handles the elevated heat and hardness demands of steel tapping without a coating — the bright, uncoated finish suits applications where coating adhesion or contamination is a concern. With 4 flutes and an H6\/H7 thread limit, this tap produces consistent Class 2B fit threads. It is part of GUHRING Series 3901 and is sized for production and maintenance use by machinists and tool-and-die professionals.\u003c\/p\u003e\u003cp\u003eThis tap is suited for through-hole threading operations in steel workpieces across production machining, maintenance repair, and fabrication environments. The 1-8 UNC thread form is a coarse-pitch designation common in structural fastener applications, fixtures, and general mechanical assemblies. The plug chamfer profile makes it appropriate for use in CNC tapping centers, drill presses, or hand tapping where a gradual thread lead-in is needed. No coolant-through feature is present, so external cutting fluid application is recommended when tapping steel.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-8 UNC coarse-pitch thread form for common structural and mechanical fastener applications\u003c\/li\u003e\n\u003cli\u003eHSS-E cobalt material provides elevated heat resistance and wear life when tapping steel\u003c\/li\u003e\n\u003cli\u003ePlug chamfer distributes cutting load gradually for controlled thread engagement\u003c\/li\u003e\n\u003cli\u003e4 flutes deliver chip clearance and stability in through-hole operations\u003c\/li\u003e\n\u003cli\u003eH6\/H7 thread limit produces Class 2B fit threads within standard tolerance\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — no coating interaction with workpiece or cutting fluid\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for through-hole threading of 1-8 UNC right-hand threads in steel. Compatible with CNC tapping centers, drill presses, and hand tap drivers that accept a shank diameter of 0.8 inches. Series 3901 spiral point geometry.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of this tap should be performed by a qualified machinist following standard threading procedures. Secure the workpiece fully before engaging the tap, and apply a suitable cutting fluid to reduce heat and extend tool life when tapping steel. Ensure the tap is aligned perpendicular to the workpiece to avoid thread lead errors or tool breakage. Follow OSHA and shop-specific lockout\/tagout procedures 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: 1-8 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 0.125 inches\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle\u003c\/strong\u003e: Spiral Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: HSS-E Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 3 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3901\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 9039010254000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51735026499890,"sku":"9039010254000","price":170.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c9dcc45d8d24f27d785a46f16c9fbfd1_94b7997c-ad61-4e21-8328-2ed9771d9d16.jpg?v=1788769373","url":"https:\/\/voomisupply.com\/products\/guhring-9039010254000-spiral-point-tap-1-8-unc","provider":"Voomi Supply","version":"1.0","type":"link"}