{"product_id":"osg-1195101-straight-flute-tap-1-4-20-unc-plug-hss","title":"Osg 1195101 Straight Flute Tap 1\/4-20 Unc Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1195101 is a straight flute tap designed for cutting internal threads in a wide range of ferrous and non-ferrous metals. It produces a 1\/4-20 UNC thread form with a right-hand thread direction and carries a 3B class of fit, making it suitable for standard-tolerance threaded assemblies. The plug chamfer configuration — typically 3 to 5 threads of lead — allows it to start threads in through-holes and sufficiently deep blind holes. Constructed from high-speed steel with an oxide coating, this tap provides adequate wear resistance and lubricity for production and maintenance threading operations. It is suited for use by machinists, maintenance technicians, and trade professionals working with hand or machine tapping setups.\u003c\/p\u003e\u003cp\u003eThis tap is appropriate for threading operations in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. Its 2-flute straight flute geometry is well matched to shorter chipping materials and through-hole applications. With an overall length of 2.5 inches and a thread length of approximately 0.85 inches, it fits standard tap holders and driver chucks used in drill press, CNC, or hand-tapping workflows. The H3 thread limit designation indicates a controlled oversize tolerance suitable for use with standard tapping lubricants and coated fasteners.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-20 UNC thread form with right-hand thread direction and 3B class of fit\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides 3-5 threads of lead for reliable thread starts in through-holes and deep blind holes\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction offers durability across a broad range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eOxide coating improves lubricity and reduces galling during the tapping process\u003c\/li\u003e\n\u003cli\u003eH3 thread limit for consistent tolerance control in standard-fit assemblies\u003c\/li\u003e\n\u003cli\u003e2-flute straight flute design suited for short-chipping materials including cast iron and aluminum\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with material applications including aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. Fits standard 1\/4-20 UNC tap holders and T-handle drivers used in hand and machine tapping setups.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed in a properly sized tap holder or chuck with the workpiece secured before threading begins. Always apply an appropriate cutting fluid or tapping oil matched to the workpiece material to extend tool life and improve thread finish. For machine tapping, verify that spindle speed and feed rate are set appropriately for the material and tap size before engaging the cut. Inspect the tap for wear or chipping before each use and replace if thread form quality degrades.\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\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\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.85 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\u003eNeck Length\u003c\/strong\u003e: 1.287 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\u003c\/strong\u003e: Oxide\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: 104\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 pounds\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\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: 1195101\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51748342726962,"sku":"1195101","price":23.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/874a0b552e11cf7b27b83974636a81f9.jpg?v=1788892696","url":"https:\/\/voomisupply.com\/products\/osg-1195101-straight-flute-tap-1-4-20-unc-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}