Emuge B1667300.0030 Spiral Point Tap M3 X 0.5 Cobalt

Product Description

The EMUGE B1667300.0030 is a cobalt extension spiral point tap designed for threading M3 x 0.5 metric holes in production and job-shop environments. With a 3.9-inch overall length and a 7/16-inch thread length, this plug-chamfer tap reaches into recessed features that standard-length taps cannot access. The spiral point geometry pushes chips forward ahead of the cutting action, keeping the flutes clear during through-hole tapping. The NE2 finish provides a surface treatment suited for use in a range of ferrous and non-ferrous materials. Licensed machinists, toolroom technicians, and CNC setup personnel are the primary users of this tool.

This tap is intended for through-hole threading applications in materials including aluminum, carbon steel, copper, and stainless steel. The extended overall length makes it well suited for fixtures, deep-boss features, or tooling plates where a standard tap cannot engage properly. The 6H class of fit produces a standard metric tolerance thread suitable for most commercial fastener assemblies. Right-hand flute direction and plug chamfer make it compatible with conventional CNC tapping cycles and hand tapping operations where lead-in alignment is needed.

Key Features

• Spiral point design pushes chips forward for efficient through-hole tapping
• Cobalt construction provides elevated heat and wear resistance compared to high-speed steel
• NE2 surface finish supports tapping in aluminum, carbon steel, copper, and stainless steel
• Extended 3.9-inch OAL reaches recessed and deep-boss features
• 6H class of fit delivers standard metric thread tolerance
• Plug chamfer provides progressive lead-in for hand and machine tapping

Compatibility

Designed for through-hole tapping of M3 x 0.5 metric threads in aluminum, carbon steel, copper, and stainless steel workpieces. Shank diameter is 0.136 inches with a 0.106-inch square drive size for use in standard tap holders and chuck-style tap drivers.

Installation Notes

Installation and use of this tap should be performed by a qualified machinist or toolroom technician familiar with metric thread standards and machine tapping practices. Secure the tap in a floating tap holder or rigid tapping chuck appropriate for the shank diameter before use. Ensure spindle speed and feed rate are set per the material being tapped; do not force the tap if resistance increases unexpectedly. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain thread quality.