{"product_id":"cleveland-c54142-hand-tap-4-40-unc-plug-2-flute-hss","title":"Cleveland C54142 Hand Tap 4-40 Unc Plug 2-flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C54142 is a 4-40 UNC hand tap designed for cutting internal threads in both blind holes and through-holes. Built from high speed steel with a bright uncoated finish, this plug-chamfer tap features two straight flutes and a right-hand thread direction. It is sized for the 4-40 thread standard, with an overall length of 1.875 inches and a thread length of 0.31 inches. The H1 thread limit keeps tolerances tight for a Class 2B fit. Machinists, toolmakers, and maintenance technicians reach for this tap when threading small-diameter fastener holes in production or repair environments.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading 4-40 holes in alloy steel, aluminum, carbon steel, and free-machining stainless steel. The plug chamfer — typically 3 to 5 threads of lead — makes it appropriate for both starter and finish tapping in through-holes and in blind holes where thread depth allows adequate chip clearance. It is a standard choice in job shops, assembly lines, and field maintenance settings where 4-40 threaded inserts or fasteners are common.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 UNC right-hand thread, Class 2B fit with H1 thread limit for consistent tolerance control\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides a balanced lead for use in through-holes and accessible blind holes\u003c\/li\u003e\n\u003cli\u003eTwo straight flutes for chip evacuation in a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction handles alloy steel, aluminum, carbon steel, and free-machining stainless steel\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish — no coating buildup to affect thread form on fine-pitch work\u003c\/li\u003e\n\u003cli\u003eCompact overall length of 1.875 inches fits standard tap wrenches and T-handle drivers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard hand tap for 4-40 UNC threaded holes. Compatible with alloy steel, aluminum, carbon steel, and free-machining stainless steel workpieces per Series 1002 application data.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eHand taps should be installed and driven with a properly sized tap wrench to maintain axial alignment and prevent breakage. Secure the workpiece before tapping and use a suitable cutting fluid for the workpiece material to extend tap life and improve thread quality. Back the tap off a partial turn periodically to break chips, especially in blind holes. Always verify hole diameter against the recommended tap drill chart for 4-40 UNC before starting.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\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: H1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.110 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\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\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: C54142\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51711661474098,"sku":"C54142","price":25.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cbf8409cf34d5300eff7aa93178d5b69.jpg?v=1788478293","url":"https:\/\/voomisupply.com\/products\/cleveland-c54142-hand-tap-4-40-unc-plug-2-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}