{"product_id":"osg-1312805-pipe-tap-1-4-18-nptf-4-flute-hss-tin","title":"Osg 1312805 Pipe Tap 1\/4-18 Nptf 4 Flute Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1312805 is a standard pipe tap designed to cut 1\/4-18 NPTF (National Pipe Taper Fuel) threads in ferrous and non-ferrous workpieces. Built from high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction during thread cutting. The 4-flute, regular-hook geometry produces clean, accurate tapered threads suited for pipe fittings, hydraulic ports, and fluid-transfer connections. With an overall length of 2.44 inches and a thread length of 1-1\/16 inches, this tap fits standard tap wrenches and machine setups used by pipefitters, machinists, and HVAC-R technicians working with threaded pipe connections.\u003c\/p\u003e\u003cp\u003eThis tap is intended for threading 1\/4-18 NPTF pipe connections in carbon steel, cast iron, and aluminum workpieces. Typical applications include creating tapered fuel-tight pipe threads in manifolds, pipe fittings, valve bodies, and ported housings. The NPTF thread profile provides a mechanically sealed joint without relying solely on thread sealant, making it the correct choice for hydraulic and fuel-line service work. The 0.5625-inch shank diameter fits standard tap holders used in both hand-tapping and light machine-tapping operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-18 NPTF tapered thread profile for fuel-tight, pressure-rated pipe connections\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability in steel, cast iron, and aluminum\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces cutting friction and extends tool life compared to uncoated HSS\u003c\/li\u003e\n\u003cli\u003e4-flute, regular-hook geometry for controlled chip evacuation and clean thread form\u003c\/li\u003e\n\u003cli\u003eThread length of 1-1\/16 inches accommodates standard pipe thread engagement depth\u003c\/li\u003e\n\u003cli\u003eSeries 118 designation for consistent dimensional conformance across OSG tap lines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 1\/4-18 NPTF threads in carbon steel, cast iron, and aluminum workpieces. Fits standard 0.5625-inch tap holders and tap wrenches used in hand and light machine tapping applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the workpiece firmly before tapping and ensure the hole is drilled to the correct tap drill diameter for 1\/4-18 NPTF threads. Apply cutting fluid appropriate for the workpiece material to reduce heat buildup and extend tap life. Back the tap out periodically to break and clear chips, especially in blind-hole applications. Inspect threads with a NPTF plug gauge after tapping to confirm thread form and engagement before assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: NPTF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHook\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Profile\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.44 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.421 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 0.459 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: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Carbon Steel, Cast Iron, Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 118\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.137 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: 1312805\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51736026906930,"sku":"1312805","price":76.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cbe5c1cd413b179eba05ac8a65793b45.jpg?v=1788775485","url":"https:\/\/voomisupply.com\/products\/osg-1312805-pipe-tap-1-4-18-nptf-4-flute-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}