{"product_id":"accupro-t1620643-spiral-point-tap-5-8-11-plug-vanadium-hss","title":"Accupro T1620643 Spiral Point Tap 5\/8-11 Plug Vanadium Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO T1620643 is a spiral point tap designed for cutting 5\/8-11 UNC internal threads in through-hole applications. Built from 3% vanadium high speed steel with an oxide finish, it delivers improved wear resistance and lubricity compared to standard HSS taps. The plug chamfer (4-5 thread lead) provides a gradual thread-forming entry, making it well-suited for machine tapping operations. With 3 flutes and a right-hand thread direction, the tap pushes chips forward ahead of the cutting zone, reducing the risk of chip packing in through holes. It carries a Class 3B fit and H3 thread limit for close-tolerance threading applications.\u003c\/p\u003e\u003cp\u003eThis tap is intended for production tapping of through holes in stainless steel and other tough ferrous materials. The 3% vanadium HSS composition gives it added toughness and hot hardness for use in materials that generate high cutting temperatures. It is appropriate for use in CNC machining centers, drill presses, and tapping heads where controlled feed and speed can be maintained. The oxide finish provides a mild level of surface protection and break-in lubricity during initial cuts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/8-11 UNC thread form with right-hand cutting direction\u003c\/li\u003e\n\u003cli\u003e3% vanadium high speed steel for improved toughness in stainless steel and hard alloys\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for gradual thread entry in through-hole tapping\u003c\/li\u003e\n\u003cli\u003e3 flutes with spiral point geometry to push chips forward and prevent packing\u003c\/li\u003e\n\u003cli\u003eH3 thread limit and Class 3B fit for close-tolerance applications\u003c\/li\u003e\n\u003cli\u003eOxide finish for surface protection and reduced galling during initial use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for through-hole tapping of stainless steel workpieces. The H3 thread limit and 3B class of fit make it compatible with standard 5\/8-11 UNC threaded fastener assemblies requiring close tolerances.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed by a machinist or tooling technician in a rigid tapping setup or CNC machine with synchronous feed capability. Always ensure the spindle is fully stopped and the machine is in a safe state before changing or inspecting taps. Use a suitable cutting fluid or tapping compound rated for stainless steel to extend tool life and maintain thread quality. Follow applicable shop safety procedures and machine manufacturer guidelines for tool holding torque and runout limits.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-11 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 Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 3% 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\u003eMaterial Application\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.81 inches (96.84 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 32 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 12.19 mm\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: 0.2 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: T1620643\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51748717494578,"sku":"T1620643","price":72.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/aad80000ceb90ff1bebd776153dfd70b.jpg?v=1788897207","url":"https:\/\/voomisupply.com\/products\/accupro-t1620643-spiral-point-tap-5-8-11-plug-vanadium-hss","provider":"Voomi Supply","version":"1.0","type":"link"}