Emuge BU20C300.5011 Spiral Point Tap 3/8-16 Unc Hss-e

Product Description

The EMUGE BU20C300.5011 is a spiral point tap designed for through-hole threading in a wide range of metalworking applications. Built from HSS-E cobalt high-speed steel and finished with a GLT-1 coating, this tap delivers reliable performance in steel, stainless steel, cast iron, and non-ferrous metals. It cuts a 3/8-16 UNC right-hand thread to a 2B class of fit with an H5 thread limit, making it suitable for production threading environments where dimensional consistency is critical. Overall length is 3.937 inches with a 22 mm thread length, and the 3-flute spiral point geometry pushes chips ahead of the tap for clean through-hole cutting.

This tap is used in machine tapping operations on CNC machining centers, drill presses, and tapping machines where through-hole threading is required. The plug chamfer provides a standard lead-in suitable for most production through-hole applications. Typical users include machinist tradespeople and toolroom technicians working with ferrous and non-ferrous workpieces across job shop, production, and maintenance environments. The GLT-1 coating reduces friction and improves tool life in demanding materials such as stainless steel and alloy steels.

Key Features

• 3/8-16 UNC right-hand thread, 2B class of fit with H5 thread limit for precise dimensional control
• HSS-E cobalt construction for improved hardness and heat resistance in tough materials
• GLT-1 coating reduces friction and extends tool life in steel and stainless steel
• 3-flute spiral point geometry pushes chips forward, optimized for through-hole threading
• Plug chamfer provides standard lead-in suitable for most through-hole production applications
• No coolant-through requirement; compatible with flood or external coolant delivery

Compatibility

Designed for through-hole threading applications in steel, stainless steel, cast iron, and non-ferrous metals. Compatible with standard machine tapping setups accepting a 0.381-inch shank diameter. Part of the EMUGE BU20C300 series.

Installation Notes

Installation should be performed by a qualified machinist using a properly aligned tapping machine, CNC machining center, or drill press with tapping capability. Ensure the workpiece is securely fixtured and the spindle is set to the correct RPM and feed rate for the material and tap size before starting. Power down and de-energize the machine before loading or changing tooling. Do not reverse the tap under power without confirming the machine supports synchronized tapping cycles.