{"product_id":"hertel-k008361as25-spiral-point-tap-1-4-28-unf-tin","title":"Hertel K008361AS25 Spiral Point Tap 1\/4-28 Unf Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL K008361AS25 is a spiral point plug tap designed for cutting right-hand internal threads in through-hole applications. Manufactured from high-speed steel and coated with titanium nitride (TiN), it produces clean 1\/4-28 UNF threads with consistent accuracy. The spiral point geometry pushes chips forward ahead of the cut, making it well-suited for through-hole work where chip evacuation is critical. With a thread limit of H1 and a 1-inch thread length, this tap meets close-tolerance threading requirements in production and maintenance environments. Machinists, tool and die technicians, and maintenance pros use this tap in CNC machines, drill presses, and hand-tapping setups.\u003c\/p\u003e\n\u003cp\u003eThis tap is appropriate for threading 1\/4-28 UNF through holes in a range of materials where high-speed steel tooling is standard. The TiN coating extends tool life by reducing friction and increasing surface hardness compared to uncoated HSS. The plug chamfer (3-5 thread lead) makes it suitable for starting in existing holes or following a bottoming operation. It is commonly used in light manufacturing, equipment repair, and general machining applications requiring unified fine-thread fastener preparation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-28 UNF thread form for unified fine-thread applications\u003c\/li\u003e\n  \u003cli\u003eSpiral point geometry pushes chips forward, ideal for through-hole threading\u003c\/li\u003e\n  \u003cli\u003eTitanium nitride (TiN) coating improves wear resistance and tool life over uncoated HSS\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction handles a broad range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eH1 thread limit for close-tolerance fits\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer provides reliable thread engagement and easy starting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard replacement or production spiral point tap for through-hole 1\/4-28 UNF threading operations in general machining and maintenance applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or maintenance technician familiar with tapping procedures. Always use appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Ensure the tap is properly aligned with the hole axis before engagement to avoid tap breakage. Power down and lock out all equipment before performing any manual tapping or tap changeout on machine tools.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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 Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\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\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: K008361AS25\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51730204918066,"sku":"K008361AS25","price":25.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fcb07e9761537c1f9b2b6477f2b52b5f.jpg?v=1788713304","url":"https:\/\/voomisupply.com\/products\/hertel-k008361as25-spiral-point-tap-1-4-28-unf-tin","provider":"Voomi Supply","version":"1.0","type":"link"}