Emuge BU20C300.5000 Spiral Point Tap 1-64 Unc Hss-e

Product Description

The EMUGE BU20C300.5000 is a spiral point tap designed for through-hole threading in a 1-64 UNC thread form. Built from HSS-E cobalt high-speed steel and finished with a GLT-1 coating, this tap handles demanding thread-cutting applications where tool life and surface finish matter. The spiral point geometry pushes chips ahead of the tap and out through the hole, keeping the flutes clear during the cut. With a plug chamfer, H3 thread limit, and 2B class of fit, it produces threads that meet standard inch-series tolerance requirements. Licensed machinists, tool-and-die makers, and maintenance technicians use this tap in production and repair work.

This tap is suited for through-hole threading in steel, stainless steel, cast iron, and non-ferrous metals. The 1-64 UNC thread size places it in miniature fastener territory, common in precision instrument assembly, electronics enclosures, and small mechanical subassemblies. The right-hand cut and 2-flute design are standard for this thread size range, balancing chip clearance with tool strength at small diameters. It is not designed for blind-hole applications where chip evacuation forward is not possible.

Key Features

• Spiral point geometry pushes chips forward, keeping flutes clear in through-hole applications
• HSS-E cobalt construction provides elevated heat and wear resistance compared to standard HSS
• GLT-1 coating reduces friction and improves tool life in steel and stainless steel
• Plug chamfer (3-5 thread lead) for general-purpose through-hole starting and cutting
• H3 thread limit and 2B class of fit for standard inch-series thread tolerances
• Right-hand cut, no coolant-through - compatible with standard tapping setups

Compatibility

Designed for through-hole threading operations producing 1-64 UNC, 2B class of fit threads. Suitable for use in steel, stainless steel, cast iron, and non-ferrous metal workpieces as specified by the manufacturer.

Installation Notes

This tap is installed by a machinist or toolroom technician in a tapping head, CNC machine, or hand tap wrench rated for miniature thread sizes. Ensure the machine spindle and tap holder are properly aligned before engagement - misalignment at small diameters causes tap breakage. Use appropriate cutting fluid or tapping compound for the workpiece material. Because this is a spiral point tap, it requires a through-hole; do not use in blind holes where chips cannot exit forward.