{"product_id":"osg-1737805-pipe-tap-1-4-18-nptf-4-flute-tin-hss","title":"Osg 1737805 Pipe Tap 1\/4-18 Nptf 4 Flute Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1737805 is a standard pipe tap designed to cut 1\/4-18 NPTF (National Pipe Taper Fuel) threads in metal workpieces. Built from vanadium high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life in demanding cutting applications. The 4-flute design provides efficient chip evacuation and thread form accuracy. With an overall length of 2.437 inches and a thread length of 1.0625 inches, this tap fits standard tap handles and machine setups. It is used by machinists, pipefitters, and maintenance technicians cutting fuel and fluid-system fittings into ferrous metal components.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading pipe-to-fitting connections in carbon steel and stainless steel workpieces where a dryseal NPTF thread form is required. The NPTF profile creates a pressure-tight mechanical seal without relying solely on thread sealant, making it a common choice for hydraulic, pneumatic, and fuel-line ports in industrial and mechanical service applications. The shank diameter of 0.5625 inches and square size of 0.421 inches fit standard tap wrenches and holders sized for this tap class.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNPTF thread profile cuts dryseal taper pipe threads for pressure-tight connections\u003c\/li\u003e\n\u003cli\u003eVanadium high-speed steel construction resists heat and wear in ferrous materials\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces friction and extends cutting edge life\u003c\/li\u003e\n\u003cli\u003e4-flute design promotes chip removal and consistent thread form\u003c\/li\u003e\n\u003cli\u003eRated for use in carbon steel and stainless steel\u003c\/li\u003e\n\u003cli\u003eSeries 318 standard tap geometry for general pipe threading work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 1\/4-18 NPTF taper pipe threads in carbon steel and stainless steel workpieces. Fits standard tap wrenches and machine tap holders accepting a 0.5625-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed and operated by machinists or qualified maintenance technicians using a tap wrench, tapping head, or CNC machine tool. Always secure the workpiece firmly and ensure the pilot hole is drilled to the correct tap drill size for 1\/4-18 NPTF before threading. Apply appropriate cutting fluid for the workpiece material to prevent galling, especially in stainless steel. Inspect the tap for wear or chipping before each use and replace if the cutting edges are damaged.\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\u003eThread Profile\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHook\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Vanadium 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, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.437 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.0625 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\u003eSeries\u003c\/strong\u003e: 318\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.125 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: 1737805\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51732806861106,"sku":"1737805","price":83.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9efbb32abfd7a8cb65c9235ac07188fb_c83d5322-48cb-406f-967d-fc9df7e4a4a3.jpg?v=1788747035","url":"https:\/\/voomisupply.com\/products\/osg-1737805-pipe-tap-1-4-18-nptf-4-flute-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}