{"product_id":"cleveland-c58448-spiral-flute-tap-3-8-16-unc-plug-hss","title":"Cleveland C58448 Spiral Flute Tap 3\/8-16 Unc Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C58448 is a spiral flute tap designed for blind hole threading in metal workpieces. It cuts a 3\/8-16 UNC right-hand thread at a 2B class of fit, making it suitable for general-purpose threaded connections requiring a standard tolerance. Manufactured from high speed steel with an oxide finish, the tap features three right-hand flutes at a 52-degree helix angle. The fast flute style evacuates chips upward and out of the hole, which is critical when tapping blind holes where chips cannot fall through. Licensed machinists and tool-and-die professionals are the primary users of this tap.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for threading blind holes in aluminum, non-ferrous metals, and steel. The 52-degree helix angle provides aggressive chip ejection, making it well suited for through-spindle or hand-tapping operations in softer materials as well as low-carbon and medium-carbon steels. The H3 thread limit designates a controlled oversize tolerance appropriate for standard 2B fit fastener assemblies. It is sold individually and is appropriate for use in CNC machining centers, drill presses, and manual tapping applications where a plug chamfer lead-in is acceptable.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 UNC right-hand thread, 2B class of fit with H3 thread limit for standard tolerance assemblies\u003c\/li\u003e\n  \u003cli\u003e52-degree helix angle with fast flute style for efficient upward chip evacuation in blind holes\u003c\/li\u003e\n  \u003cli\u003eThree right-hand spiral flutes for balanced cutting action and reduced torque\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides good wear resistance across aluminum, non-ferrous metals, and steel\u003c\/li\u003e\n  \u003cli\u003eOxide finish provides mild lubricity and corrosion resistance during storage and use\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer (3-5 thread lead) for standard starting in pre-drilled through or blind holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole threading applications in aluminum, non-ferrous metals, and steel. Compatible with standard tap wrenches, tapping heads, and CNC rigid tapping setups accepting a 0.381-inch shank diameter. Cuts 3\/8-16 UNC threads to a 2B class of fit.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed by machinists and tooling professionals using a tap wrench, tapping arm, or CNC tapping head. Ensure the workpiece is securely fixtured and the pilot hole diameter matches the recommended tap drill size for 3\/8-16 UNC threads before beginning. Apply appropriate cutting fluid for the workpiece material to extend tap life and reduce the risk of breakage. When tapping blind holes, stop the tap before it bottoms out to avoid tap breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\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: 16\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\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: 52 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Fast\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: Aluminum, Non-Ferrous Metal, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-15\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.51 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.286 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: 1093BO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.2 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: CLEVELAND\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C58448\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51691622236466,"sku":"C58448","price":58.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8cb61a5c2942927cb32cf7249e2a6f1a.jpg?v=1788287886","url":"https:\/\/voomisupply.com\/products\/cleveland-c58448-spiral-flute-tap-3-8-16-unc-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}