{"product_id":"regal-cutting-tools-015974as-extension-pipe-tap-1-4-18-nptf","title":"Regal Cutting Tools 015974AS Extension Pipe Tap 1\/4-18 Nptf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe REGAL CUTTING TOOLS 015974AS is a high speed steel extension pipe tap designed for cutting 1\/4-18 NPTF internal pipe threads in extended-reach or deep-hole applications. With an overall length of 6 inches, this tap gives machinists, pipefitters, and maintenance mechanics the clearance needed when standard-length taps cannot access the workpiece. The plug chamfer on the lead threads provides a controlled entry point, distributing the cutting load across several threads for accurate thread formation. The bright finish leaves the HSS substrate exposed, which is appropriate for general-purpose tapping in a range of materials.\u003c\/p\u003e\n\u003cp\u003eThis extension pipe tap is suited for threading pipe ports, fittings, manifolds, and hydraulic or pneumatic blocks where an NPTF seal is required. NPTF threads are a dry-seal pipe thread standard, meaning the mating threads themselves create a pressure-tight joint without relying solely on sealant. The 5-flute design provides additional cutting edges compared to a standard 4-flute tap, which supports chip clearance and thread quality in through-hole and shallow blind applications. Typical use cases include maintenance and repair shops, plumbing fabrication, and industrial equipment service where tapered pipe thread connections are specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-18 NPTF thread form produces dry-seal tapered pipe threads for pressure-tight connections\u003c\/li\u003e\n  \u003cli\u003e6-inch overall length provides extended reach for deep or obstructed tap locations\u003c\/li\u003e\n  \u003cli\u003e5-flute configuration increases cutting edges for improved chip evacuation and thread finish\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer distributes cutting load across the lead threads for controlled thread entry\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction maintains edge integrity across a wide range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eBright finish with no coating for straightforward inspection and general-purpose use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for cutting 1\/4-18 NPTF internal threads in metal workpieces where an extended-reach pipe tap is required. Suitable for use with standard tap handles, tap wrenches, or machine tapping setups configured for 1\/4-18 tapered pipe thread work.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap should be installed and operated by a qualified machinist, pipefitter, or maintenance technician familiar with tapping procedures and speeds for high speed steel tooling. Always use appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Secure the workpiece firmly before tapping and align the tap perpendicular to the entry surface to prevent cross-threading or tap breakage. Inspect the tap for wear or chipping before each use and replace if cutting edges show visible damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupted Thread\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: REGAL CUTTING TOOLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 015974AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"REGAL CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":67911817298226,"sku":"015974AS","price":89.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/83c21869147e249a3cce46aadc5cc085_4eb2ec1d-da65-4d78-9238-84dab257bd5e.jpg?v=1791220454","url":"https:\/\/voomisupply.com\/products\/regal-cutting-tools-015974as-extension-pipe-tap-1-4-18-nptf","provider":"Voomi Supply","version":"1.0","type":"link"}