{"product_id":"kennametal-5416856-spiral-point-tap-1-4-20-unc-hss-e","title":"Kennametal 5416856 Spiral Point Tap 1\/4-20 Unc Hss-e","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 5416856 is a spiral point tap designed for through-hole threading in 1\/4-20 UNC applications. Built from HSS-E (High-Speed Steel-E, grade KSP39), the tap features an oxide coating that reduces friction and improves chip evacuation during the threading operation. With 3 flutes and a plug chamfer, it is suited for machine tapping in production environments where the tool pushes chips ahead of the cut into a through hole. Overall length is 2.5 inches with a thread length of 0.63 inches. The shank diameter measures 0.255 inches. This is a right-hand, H7 thread limit tap from the Kennametal T820 series, intended for installation by machinists, toolroom technicians, and CNC setup personnel.\u003c\/p\u003e\n\u003cp\u003eThis tap is used in through-hole threading of ferrous materials including steel, stainless steel, and cast iron. It is appropriate for CNC machining centers, drill presses with tapping attachments, and manual tapping operations where a through-hole exit exists for chip clearance. The plug chamfer provides a gradual lead-in over several threads, making it a standard choice for production tapping in medium-hardness materials. It is not suited for blind-hole applications where chip pushback cannot exit the hole.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSpiral point geometry pushes chips forward through the hole, reducing chip packing in through-hole applications\u003c\/li\u003e\n  \u003cli\u003eHSS-E (grade KSP39) construction provides increased toughness and wear resistance compared to standard HSS\u003c\/li\u003e\n  \u003cli\u003eOxide coating reduces friction and provides light corrosion protection during storage and use\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer with H7 thread limit delivers consistent thread tolerance control\u003c\/li\u003e\n  \u003cli\u003e3-flute design balances rigidity and chip clearance for steel, stainless steel, and cast iron\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread, 20 TPI, 1\/4-20 UNC — one of the most common fastener thread standards in North American manufacturing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for through-hole threading in steel, stainless steel, and cast iron workpieces. Compatible with standard 1\/4-20 UNC tap holders, quick-change tapping chucks, and floating tap holders accepting a 0.255-inch shank diameter. Series T820 from Kennametal.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician familiar with tapping feeds, speeds, and torque limits for the workpiece material. Secure the tap in a properly sized holder and confirm spindle alignment before engaging the workpiece. Apply appropriate cutting fluid for the material being tapped — dry tapping is generally not recommended for stainless steel. Inspect the tap for chipping or wear before each production run; a worn tap will produce out-of-tolerance threads and may break in the hole.\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\u003eThreads per Inch\u003c\/strong\u003e: 20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: H7\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\u003eStyle\u003c\/strong\u003e: Spiral Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: HSS-E (Grade KSP39)\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: Steel, Stainless Steel, Cast Iron\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: 0.63 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: 0.37 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 0.05 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: T820\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5416856\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51753774711090,"sku":"5416856","price":52.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/861d04fdd0d65732ca5807df8952d8d4_113ace9a-a666-4a1e-aa3f-1b93362c38de.jpg?v=1788940582","url":"https:\/\/voomisupply.com\/products\/kennametal-5416856-spiral-point-tap-1-4-20-unc-hss-e","provider":"Voomi Supply","version":"1.0","type":"link"}