{"product_id":"hertel-k010378as85-thread-forming-tap-5-16-18-unc-bottoming","title":"Hertel K010378AS85 Thread Forming Tap 5\/16-18 Unc Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL K010378AS85 is a thread forming tap designed for creating 5\/16-18 UNC internal threads in blind hole applications. Unlike cutting taps, thread forming taps displace material rather than cut it, producing stronger threads with no chips to clear. This tap is manufactured from high-speed steel and coated with TiCN for extended tool life and reduced friction. It carries a 2B class of fit and an H5 thread limit, making it suitable for standard tolerance threading work. With an overall length of 2.7188 inches and a 1.125-inch thread length, it is sized for typical machine tool setups in production and repair environments. Licensed machinists and tooling technicians are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis tap is built for blind hole threading in ferrous and non-ferrous metals where chip evacuation is a concern and material flow forming is preferred. The bottoming chamfer geometry, with 1 to 2 chamfered threads, allows threading close to the bottom of a blind hole. It is well suited for use in CNC machining centers, drill presses, and tapping machines in industrial, maintenance, and job shop settings. The TiCN coating improves wear resistance compared to uncoated high-speed steel, extending service intervals in moderate-volume production runs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread forming design displaces material to create chip-free blind hole threads\u003c\/li\u003e\n  \u003cli\u003eTiCN coating reduces friction and extends tool life versus bare high-speed steel\u003c\/li\u003e\n  \u003cli\u003eBottoming chamfer allows threading to within 1 to 2 pitches of hole bottom\u003c\/li\u003e\n  \u003cli\u003eH5 thread limit for consistent 2B class of fit tolerances\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction for standard machine spindle compatibility\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through requirement simplifies setup on standard tapping equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use thread forming tap for 5\/16-18 UNC blind hole applications in machine shop and industrial maintenance environments. Fits standard tap holders sized for a 0.318-inch shank diameter with a 0.238-inch square drive.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require a larger pilot hole diameter than cutting taps — consult a thread forming tap drill chart for the correct forming drill size for 5\/16-18 UNC before drilling. Adequate lubrication or cutting fluid is required to prevent galling, particularly in steel or stainless materials. Ensure the workpiece is securely fixtured and the tap is properly aligned to the hole axis before engagement. Inspect the tap for wear or damage before each use and replace when torque requirements increase noticeably.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 1 to 2 threads\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: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.7188 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.318 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.238 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\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: 0.3 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: K010378AS85\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51751326122290,"sku":"K010378AS85","price":58.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1cf910a53d825766adf46ee4ac7b0e7e.jpg?v=1788922869","url":"https:\/\/voomisupply.com\/products\/hertel-k010378as85-thread-forming-tap-5-16-18-unc-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}