{"product_id":"osg-1735305-npt-pipe-tap-1-4-18-4-flute-vanadium-hss","title":"Osg 1735305 Npt Pipe Tap 1\/4-18 4 Flute Vanadium Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1735305 is a standard NPT pipe tap designed to cut 1\/4-18 taper pipe threads in metal workpieces. Built from vanadium high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and improved wear resistance compared to uncoated HSS taps. The 4-flute configuration provides balanced cutting action and chip clearance during threading operations. With an overall length of 2.437 inches and a shank diameter of 0.5625 inches, this tap fits standard tap wrenches and machine spindles. It is installed by machinists, pipefitters, and plumbers creating NPT-threaded ports in pipe fittings, manifolds, valves, and mechanical components.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading operations in both carbon steel and stainless steel materials. It is commonly used in plumbing, HVAC, and industrial piping applications where NPT-standard tapered threads are required for pressure-tight joints. The Series 308 designation identifies it within the OSG standard pipe tap product line. It is appropriate for hand tapping and machine tapping setups where a 1\/4-18 NPT thread is the target specification.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-18 NPT taper pipe thread standard for pressure-tight pipe connections\u003c\/li\u003e\n\u003cli\u003eVanadium high-speed steel construction for toughness and heat resistance\u003c\/li\u003e\n\u003cli\u003eTiN coating extends tool life and reduces friction during cutting\u003c\/li\u003e\n\u003cli\u003e4-flute design balances chip evacuation and thread form quality\u003c\/li\u003e\n\u003cli\u003eThread length of 1-1\/16 inches accommodates standard NPT taper engagement\u003c\/li\u003e\n\u003cli\u003eCompatible with carbon steel and stainless steel workpiece materials\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in carbon steel and stainless steel workpieces requiring 1\/4-18 NPT tapered pipe threads. Fits standard tap wrenches and machine tool holders accepting a 0.5625-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by licensed plumbers, pipefitters, or machinists performing threaded port work. Always secure the workpiece and ensure the tap is started square to the hole before applying cutting pressure. Use an appropriate cutting fluid for the workpiece material, particularly when tapping stainless steel. Follow applicable codes such as the IPC or IFGC when creating threaded connections in pressure-bearing piping systems.\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: NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Type\u003c\/strong\u003e: Standard\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\u003eThread Length\u003c\/strong\u003e: 1-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.437 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: 0.4210 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 0.4590 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Vanadium High-Speed Steel\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\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 308\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.129 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: 1735305\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728679469362,"sku":"1735305","price":83.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cc1423df588ee8f34c0b6a755fe78224.jpg?v=1788694881","url":"https:\/\/voomisupply.com\/products\/osg-1735305-npt-pipe-tap-1-4-18-4-flute-vanadium-hss","provider":"Voomi Supply","version":"1.0","type":"link"}