{"product_id":"hertel-g837520-s-pipe-tap-3-8-18-npt-4-flute-hss","title":"Hertel G837520-S Pipe Tap 3\/8-18 Npt 4 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL G837520-S is a standard pipe tap designed to cut 3\/8-18 NPT internal threads in metal workpieces. It is manufactured from high speed steel and features a bright, uncoated finish suited for general-purpose tapping applications. The tap has 4 flutes and a short projection design, with a thread length of 1-1\/16 inches. A shank diameter of 0.700 inches and a square size of 0.531 inches allow it to seat securely in standard tap wrenches and machine holders. Machinists, pipefitters, and plumbers use this tap to create NPT-tapered threads for pipe fittings, valves, and threaded connections in ferrous and non-ferrous materials.\u003c\/p\u003e\u003cp\u003eThis tap is suited for creating NPT pipe threads in light to medium-duty applications including pipe fitting installations, repair work, and fabrication. The 3\/8-18 NPT designation refers to a 3\/8-inch nominal pipe size with 18 threads per inch, a common thread standard used across plumbing, HVAC, and industrial piping systems. It is appropriate for use in both shop and field tapping operations where an NPT-tapered thread is required for a pressure-rated connection.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/8-18 NPT thread standard for tapered pipe thread applications\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability in general tapping use\u003c\/li\u003e\n\u003cli\u003e4-flute geometry for effective chip evacuation during cutting\u003c\/li\u003e\n\u003cli\u003eShort projection design for use in confined or limited-clearance installations\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with cutting fluids across a range of materials\u003c\/li\u003e\n\u003cli\u003eThread length of 1-1\/16 inches provides sufficient engagement depth for standard NPT connections\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard tooling tap for applications requiring 3\/8-18 NPT internal threads in pipe, fittings, and threaded port machining operations.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists and pipefitters using a standard tap wrench or tapping attachment on a drill press or milling machine. Always use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Ensure the pilot hole is drilled to the correct tap drill size for 3\/8-18 NPT before tapping. Do not force or back-drive the tap beyond resistance, as high speed steel tools are subject to breakage under excessive torque.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Type\u003c\/strong\u003e: Short Projection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 0.392 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.700 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.531 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\u003eWeight\u003c\/strong\u003e: 0.06 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: G837520-S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51753105162546,"sku":"G837520-S","price":79.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c14c449c1b8437d3874b30ebb3d76cdb.jpg?v=1788932830","url":"https:\/\/voomisupply.com\/products\/hertel-g837520-s-pipe-tap-3-8-18-npt-4-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}