{"product_id":"cleveland-c54121-hand-tap-3-56-unf-plug-3-flute-hss","title":"Cleveland C54121 Hand Tap 3-56 Unf Plug 3-flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C54121 is a 3-56 UNF straight-flute hand tap designed for cutting internal threads in both blind holes and through-holes. Built from high speed steel with a bright uncoated finish, it carries a plug chamfer and a Class 2B thread fit with an H2 thread limit. The tap measures 1.813 inches overall length with a 0.5 inch threaded length, making it well-suited for tight-clearance work on small-diameter fastener applications. Machinists and toolroom professionals use this tap by hand or with a standard tap wrench when threading small-scale components to UNF specifications.\u003c\/p\u003e\u003cp\u003eThis tap is intended for threading operations on alloy steel, carbon steel, aluminum, and free-machining stainless steel workpieces. The 3-56 thread size and plug chamfer make it a practical choice for starting threads in partially drilled or through-drilled holes where a gradual thread entry is appropriate. It is part of the Cleveland Series 1002 standard tap line, commonly used in production shops, maintenance environments, and toolroom settings where hand tapping of fine unified threads is routine.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3-56 UNF right-hand thread with Class 2B fit and H2 thread limit for standard tolerance threading\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides gradual thread engagement, suitable for both blind and through-hole applications\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction offers durability across a range of ferrous and non-ferrous workpiece materials\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish with 3 straight flutes for efficient chip handling in hand tapping operations\u003c\/li\u003e\n\u003cli\u003eCompact 1.813 inch overall length with 0.1410 inch shank diameter suited for small-fastener work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use hand tap for 3-56 UNF threading applications in standard Class 2B tolerance work across alloy steel, carbon steel, aluminum, and free-machining stainless steel materials.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists or toolroom technicians using a standard tap wrench or T-handle. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for 3-56 UNF before beginning. Apply appropriate cutting fluid for the workpiece material to extend tap life and reduce the risk of breakage. Never force the tap if resistance increases unexpectedly — back off to clear chips and inspect before continuing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3-56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\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: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\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: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.813 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.5 inches (12.70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches (3.58 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches (4.76 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.110 inches (2.79 mm)\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: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Alloy Steel, Aluminum, Carbon Steel, Free-Machining Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading, 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: 1002\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: C54121\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51691594744114,"sku":"C54121","price":30.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/22c5abc5d5235208ef7d157411740b9d.jpg?v=1788287494","url":"https:\/\/voomisupply.com\/products\/cleveland-c54121-hand-tap-3-56-unf-plug-3-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}