{"product_id":"accupro-t1640405-spiral-point-tap-1-4-20-3-flute","title":"Accupro T1640405 Spiral Point Tap 1\/4-20 3 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO T1640405 is a spiral point tap designed for cutting right-hand internal threads in through-hole applications. Built from HSS-E vanadium high speed steel with an oxide finish, it delivers reliable wear resistance and lubricity in production tapping operations. The plug chamfer style distributes cutting load across the lead threads, making it suitable for through-hole tapping in steel, cast iron, and similar ferrous materials. With a 1\/4-20 UNC thread form and a 2B class of fit, this tap produces threads that meet standard fastener tolerance requirements. It is typically installed and used by machinists, tool and die technicians, and maintenance professionals across industrial and commercial applications.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for through-hole tapping in production and maintenance environments where a standard 1\/4-20 UNC thread is required. The H5 thread limit designation makes it appropriate for use with standard 2B class fits, which cover the majority of general-purpose threaded fastener assemblies. The oxide coating reduces friction and provides light corrosion resistance during storage and use. It is commonly used in machine shops, MRO operations, and field maintenance settings where consistent thread quality is needed in ferrous workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 UNC thread form with 2B class of fit for standard fastener compatibility\u003c\/li\u003e\n  \u003cli\u003eHSS-E vanadium construction provides enhanced toughness and wear resistance over standard HSS\u003c\/li\u003e\n  \u003cli\u003eOxide finish reduces friction and offers light corrosion protection\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer with 3 flutes for efficient chip evacuation in through-hole applications\u003c\/li\u003e\n  \u003cli\u003eH5 thread limit for consistent 2B tolerance across production runs\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, no coolant-through passages required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard replacement spiral point tap for through-hole 1\/4-20 UNC tapping operations in ferrous and similar materials where an H5 thread limit and 2B class of fit are specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eUse in a tapping head, drill press, CNC machine, or hand tap wrench rated for the workpiece material. Always secure the workpiece firmly and ensure the tap is properly aligned to the drilled hole before engaging. Apply a suitable cutting fluid or tapping compound for the workpiece material to extend tool life and improve thread finish. Inspect the tap for wear or chipping before each use and replace when thread quality degrades.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: HSS-E Vanadium High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.748 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: T1640405\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51728851435826,"sku":"T1640405","price":25.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/638ae41571ddea9d8b5226ff61dd242e.jpg?v=1788696849","url":"https:\/\/voomisupply.com\/products\/accupro-t1640405-spiral-point-tap-1-4-20-3-flute","provider":"Voomi Supply","version":"1.0","type":"link"}