{"product_id":"hertel-r837535-s-pipe-tap-1-1-4-11-1-2-nptf-5-flutes-hss","title":"Hertel R837535-S Pipe Tap 1-1\/4-11-1\/2 Nptf 5 Flutes Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL R837535-S is a standard pipe tap designed to cut National Pipe Taper Fuel (NPTF) threads into pipe fittings, manifolds, and threaded ports across a range of industrial and trade applications. Manufactured from high speed steel (HSS) with a bright, uncoated finish, this tap cuts a 1-1\/4 - 11-1\/2 NPTF thread form. It features 5 flutes for efficient chip evacuation and is classified as a short projection tap with an overall length of 4 inches and a thread length of 1-3\/4 inches. The shank diameter is 1.3125 inches and the square size measures 0.9840 inches, making it compatible with standard tap wrenches and machine holders of the appropriate drive size.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading pipe-entry ports in hydraulic systems, pneumatic assemblies, fuel system components, and fluid handling equipment. The NPTF thread form creates a pressure-tight, metal-to-metal seal without relying solely on thread sealant, which makes it a common choice in plumbing, HVAC, and industrial maintenance work. It is appropriate for use in both hand-tapping and machine-tapping setups where controlled feed and alignment can be maintained. The short projection design is well suited to close-clearance work where a standard length tap would not fit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNPTF thread form for pressure-tight, metal-to-metal pipe thread connections\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability across a range of ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003e5-flute geometry promotes chip evacuation and reduces cutting resistance\u003c\/li\u003e\n\u003cli\u003eShort projection tap type suited for restricted-access tapping locations\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish allows visual inspection of cutting edges before and after use\u003c\/li\u003e\n\u003cli\u003eOverall length of 4 inches with a 1-3\/4 inch thread length for controlled depth engagement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use pipe tap for applications requiring a 1-1\/4 - 11-1\/2 NPTF thread standard in pipe fittings, fluid ports, and threaded housings.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed by a machinist, pipefitter, or qualified tradesperson familiar with threading operations. Always secure the workpiece fully and use a calibrated tap wrench or tapping machine set to the appropriate speed and feed for the material being tapped. Apply a suitable cutting fluid throughout the operation to reduce heat and extend tool life. Inspect threads with a NPTF thread gauge after tapping to verify seal integrity before final assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/4 - 11-1\/2\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\u003eTap Type\u003c\/strong\u003e: Short Projection\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\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.3125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.9840 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 0.5650 inches\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: R837535-S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51737584828722,"sku":"R837535-S","price":438.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/74f5cf5345d26704b4dc2a7cd53f9730_1ae39f1f-7d88-45da-a2af-0b8666ac2c84.jpg?v=1788790872","url":"https:\/\/voomisupply.com\/products\/hertel-r837535-s-pipe-tap-1-1-4-11-1-2-nptf-5-flutes-hss","provider":"Voomi Supply","version":"1.0","type":"link"}