{"product_id":"cleveland-c55224-hand-tap-3-8-16-unc-bottoming-tin-hss","title":"Cleveland C55224 Hand Tap 3\/8-16 Unc Bottoming Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C55224 is a 3\/8-16 UNC bottoming hand tap designed for cutting internal threads in both blind and through holes. Manufactured from high speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction during threading operations. The 4-flute straight flute geometry provides clean chip evacuation and consistent thread form. With a 3B class of fit and H3 thread limit, this tap produces threads to tight tolerances suitable for precision fastener applications in production and maintenance machining environments. Licensed machinists, tool-and-die makers, and maintenance technicians are the primary installers.\u003c\/p\u003e\u003cp\u003eThe C55224 is suited for threading blind holes and through holes in alloy steel, carbon steel, aluminum, and free-machining stainless steel. The bottoming chamfer allows threading close to the bottom of a blind hole, making it the right choice when thread runout must be minimized. It is commonly used in job shop, toolroom, and field maintenance settings where hand tapping is performed with a tap wrench or machine assist at low RPM.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for threading to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces friction and extends tool life compared to uncoated HSS taps\u003c\/li\u003e\n\u003cli\u003e4-flute straight flute design for consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003e3B class of fit with H3 thread limit for tight-tolerance thread production\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, 3\/8-16 UNC thread form\u003c\/li\u003e\n\u003cli\u003eCompatible with alloy steel, carbon steel, aluminum, and free-machining stainless steel\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for blind hole and through-hole threading applications in alloy steel, aluminum, carbon steel, and free-machining stainless steel workpieces requiring 3\/8-16 UNC internal threads.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eHand tapping should be performed by a machinist or qualified technician using an appropriate tap wrench sized for the square drive. Secure the workpiece firmly before threading and apply cutting fluid suited to the workpiece material to reduce heat and tap wear. Back the tap off periodically to break chips, especially in deeper blind holes. Inspect the tap for wear or chipping before each use to avoid broken tap extraction.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\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: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Straight Flute\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: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.938 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/4 inches (0.750 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 7\/16 inches (0.4375 inches decimal)\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: 1003TN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.8 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: CLEVELAND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C55224\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51697500291378,"sku":"C55224","price":37.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7618e148d4b7c7390f6925d2625d13a2.jpg?v=1788352181","url":"https:\/\/voomisupply.com\/products\/cleveland-c55224-hand-tap-3-8-16-unc-bottoming-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}