{"product_id":"osg-1100100-straight-flute-tap-1-4-20-unc-plug-hss","title":"Osg 1100100 Straight Flute Tap 1\/4-20 Unc Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1100100 is a straight flute plug tap designed for cutting internal threads in a variety of ferrous and non-ferrous materials. Built from high-speed steel with a bright\/uncoated finish, it produces 1\/4-20 UNC right-hand threads with a standard H1 thread limit for consistent dimensional accuracy. The plug chamfer  -  typically 3 to 5 threads  -  makes it suitable for through-holes and most general-purpose tapping applications. With four flutes and a 2.5-inch overall length, this tap is a standard hand and machine tap used by machinists, pipefitters, and maintenance technicians across industrial and commercial settings.\u003c\/p\u003e\u003cp\u003eThis tap is used for tapping 1\/4-20 UNC threads in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It fits standard tap handle drives and compatible machine spindles. The Series 101 designation places it within OSG's standard straight flute tap line, making it a reliable choice for production runs and maintenance repair work where a consistent thread profile is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-20 UNC thread form with right-hand thread direction\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for general-purpose through-hole and open-bottom tapping\u003c\/li\u003e\n\u003cli\u003e4-flute straight flute design for chip control in a wide range of materials\u003c\/li\u003e\n\u003cli\u003eH1 thread limit for close-tolerance thread production\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction  -  no coolant-through required\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish suitable for use with standard cutting fluids\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style straight flute plug tap for general-purpose 1\/4-20 UNC tapping applications in aluminum, cast iron, and carbon steel workpieces using standard tap handles or machine tap holders.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by licensed machinists or qualified maintenance technicians using a calibrated tap handle, tapping head, or CNC spindle with appropriate chuck. Always secure the workpiece and ensure the tap is started perpendicular to the hole to prevent thread damage or tap breakage. Apply a suitable cutting fluid for the workpiece material before and during tapping. Follow applicable shop safety standards and equipment manufacturer guidelines when operating tapping machines.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\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\u003eThread Limit\u003c\/strong\u003e: H1\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: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.181 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 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\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Cast Iron, Low-Carbon Steel, Medium-Carbon Steel, High-Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 101\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1100100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51740070576434,"sku":"1100100","price":22.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/326d7ab8b02d8071a42bd324ef4f1ff7_3d1ed396-65f5-4503-aec8-629feee50648.jpg?v=1788822055","url":"https:\/\/voomisupply.com\/products\/osg-1100100-straight-flute-tap-1-4-20-unc-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}