{"product_id":"scientific-cutting-tools-tm330-18npt-thread-mill-npt-4-flutes","title":"Scientific Cutting Tools TM330-18NPT Thread Mill Npt 4 Flutes","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS TM330-18NPT is a straight flute thread mill designed to cut NPT (National Pipe Taper) threads in both external and internal applications. Built from submicron solid carbide, this tool handles 1\/4-18 and 3\/8-18 NPT thread sizes in a single tool body. It runs 4 flutes at 18 teeth per inch, with a 0.33-inch cutting diameter and a 0.693-inch length of cut. Overall length is 3.5 inches, and the shank diameter is 3\/8 inches. Machinists and CNC programmers use this tool in machining centers for precision pipe thread production in ferrous and non-ferrous materials.\u003c\/p\u003e\u003cp\u003eThis thread mill is suited for job shops, production machining, and maintenance repair operations requiring NPT-compliant pipe threads. It covers both 1\/4-18 and 3\/8-18 NPT profiles, making it a versatile option when multiple pipe thread sizes appear in the same workpiece. The bright uncoated finish means it runs without a specialty coating, keeping regrinding straightforward. It is not configured for coolant-through delivery, so flood or mist coolant applied externally is standard practice on the spindle approach.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCuts both 1\/4-18 and 3\/8-18 NPT threads  -  external and internal  -  with one tool\u003c\/li\u003e\n\u003cli\u003eSubmicron solid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003e4 straight flutes at 18 TPI for consistent thread form\u003c\/li\u003e\n\u003cli\u003e0.33-inch cutting diameter with 0.693-inch length of cut\u003c\/li\u003e\n\u003cli\u003e3\/8-inch shank diameter fits standard ER or shrink-fit toolholders\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish  -  reground without coating removal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers capable of helical interpolation; cuts NPT threads conforming to the 1\/4-18 and 3\/8-18 NPT thread standard.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread milling requires a CNC control with helical interpolation capability  -  confirm G-code support before setup. Secure the 3\/8-inch shank in a balanced, low-runout toolholder and verify runout at the cutting diameter before the first pass. Power down the machine and follow lockout\/tagout procedures when changing or inspecting the tool. Do not use this tool on manual mills; thread milling toolpaths must be programmed to the correct pitch and lead-in geometry for NPT taper profiles.\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 Sizes\u003c\/strong\u003e: 1\/4-18 and 3\/8-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: External and Internal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.33 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.693 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide (Submicron Grade)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStaggered Tooth\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242117\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SCIENTIFIC CUTTING TOOLS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TM330-18NPT\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":52024247976242,"sku":"TM330-18NPT","price":232.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1b82d4bd7062595cad6a0afb47e9f81e.jpg?v=1790014641","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-tm330-18npt-thread-mill-npt-4-flutes","provider":"Voomi Supply","version":"1.0","type":"link"}