{"product_id":"osg-1011900-straight-flute-tap-3-56-unf-plug-hss","title":"Osg 1011900 Straight Flute Tap 3-56 Unf Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1011900 is a straight flute tap designed for threading 3-56 UNF holes in a range of ferrous and non-ferrous metals. Built from high-speed steel with a bright, uncoated finish, it cuts right-hand internal threads to a 2B class of fit and an H2 thread limit. The plug chamfer on this tap requires a through hole or sufficient chip clearance in a blind hole. With 3 flutes and a 1\/2 inch thread length, it is sized for small-diameter threading applications where precision and fit consistency matter. Overall length is 1-13\/16 inches, keeping it manageable in tight setups.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for threading aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It fits residential and light industrial maintenance, toolroom work, and production setups where 3-56 UNF fastener threads are required. Machinists, tool and die technicians, and maintenance professionals use this tap in drill press, CNC, or hand-tapping operations where a standard straight flute geometry is the preferred choice for through-hole work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3-56 UNF thread form, 56 threads per inch, right-hand thread direction\u003c\/li\u003e\n  \u003cli\u003e2B class of fit with H2 thread limit for consistent, tolerance-controlled threads\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer for use in through holes or blind holes with adequate depth\u003c\/li\u003e\n  \u003cli\u003e3 straight flutes  -  no chip evacuation upward; best for through-hole applications\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction handles a broad range of ferrous and non-ferrous workpiece materials\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish  -  no additional surface treatment; suitable for use with standard tapping fluids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces requiring a 3-56 UNF internal thread. Part of OSG Series 102.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eStraight flute taps are installed by machinists or maintenance technicians using a tap wrench, drill press, or CNC tapping cycle. Always ensure the pilot hole diameter matches the recommended tap drill size for 3-56 UNF before beginning the threading operation. Apply an appropriate tapping fluid for the workpiece material to reduce heat and extend tool life. Do not reverse-tap without breaking the chip first, and back off periodically to clear chips when working in deeper holes.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3-56 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 56\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1\/2 inch (0.496 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-13\/16 inches (1.811 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 Size\u003c\/strong\u003e: 0.11 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\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Cast Iron, High-Carbon Steel, Low-Carbon Steel, Medium-Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 102\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.003 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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1011900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51743292129586,"sku":"1011900","price":26.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9db8ddd4da5efbf9e54be2e88ed6ca3a.jpg?v=1788845187","url":"https:\/\/voomisupply.com\/products\/osg-1011900-straight-flute-tap-3-56-unf-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}