{"product_id":"osg-2985501-spiral-flute-tap-10-32-unf-bottoming-hss","title":"Osg 2985501 Spiral Flute Tap 10-32 Unf Bottoming Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 2985501 is a spiral flute bottoming tap designed for threading 10-32 UNF holes in aluminum and carbon steel workpieces. Built from high-speed steel with a steam oxide coating, it delivers reliable performance in production and maintenance tapping applications. The 50-degree helix angle promotes efficient chip evacuation up and out of the hole, making it well suited for blind-hole tapping where chip buildup is a concern. With a 2B class of fit, it produces threads within standard tolerance for general mechanical assembly. The right-hand, three-flute spiral configuration balances cutting load across the tool and supports consistent thread form through the full depth of the tapped hole.\u003c\/p\u003e\u003cp\u003eThis tap is used in metalworking and machining environments where fine unified threads are required in blind holes. The bottoming chamfer allows threading closer to the bottom of a hole than plug or taper style taps. Typical applications include tapping threaded fastener holes in aluminum brackets, steel panels, and light structural components. It is appropriate for use in manual tap handles, CNC tapping heads, and benchtop drill press setups where controlled axial feed can be maintained. The steam oxide finish provides a degree of lubricity and mild corrosion resistance during storage and use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for threading to near full depth in blind holes\u003c\/li\u003e\n\u003cli\u003e50-degree helix angle for upward chip evacuation in blind-hole applications\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability in aluminum and carbon steel\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating adds surface lubricity and basic corrosion protection\u003c\/li\u003e\n\u003cli\u003e2B class of fit for standard unified fine thread tolerance\u003c\/li\u003e\n\u003cli\u003eRight-hand, three-flute spiral design balances cutting forces across the tool\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 10-32 UNF right-hand threads in aluminum and carbon steel. Compatible with standard tap handles and machine tapping chucks sized for the 0.194-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by a machinist or maintenance technician using a tap handle, tapping head, or CNC spindle with rigid or floating tap holder. Ensure the workpiece is securely fixtured and the tap is started perpendicular to the hole face to prevent cross-threading or tap breakage. Apply an appropriate cutting fluid for the workpiece material before and during tapping. For blind holes, track depth carefully to avoid bottoming the tap against the hole floor under load.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 10-32\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: 32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Spiral\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\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 50 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.492 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.866 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 Length\u003c\/strong\u003e: 0.25 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\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 2985501\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51753192948018,"sku":"2985501","price":32.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1aa1b66b48f44db121287c03cbc0271a.jpg?v=1788933713","url":"https:\/\/voomisupply.com\/products\/osg-2985501-spiral-flute-tap-10-32-unf-bottoming-hss","provider":"Voomi Supply","version":"1.0","type":"link"}