Norseman Drill and Tool Type 32-RNC Metric M42 Cobalt Bright Finish Plug Tap

Norseman Drill & Tool Type 32-RNC Metric M42 Cobalt Bright Finish Plug Tap

Precision Metric Threading for Hardened and High-Wear Materials

The Norseman Drill & Tool Type 32-RNC Metric M42 Cobalt Bright Finish Plug Tap is engineered for high-performance threading in demanding materials where strength, accuracy, and tool life are critical. Designed specifically for through-hole tapping, this metric plug tap delivers reliable results in both production machining and maintenance environments.

M42 Cobalt Construction for Hardened Steels

Built for Rc 30–45 Applications

Manufactured from premium M42 cobalt high-speed steel, the Type 32-RNC offers exceptional hot hardness, wear resistance, and edge stability. This advanced cobalt alloy is ideal for mold steel and hardened steel with Rockwell C hardness between C30 and C45, where standard HSS taps may fail prematurely. The cobalt content allows the tap to maintain cutting integrity under elevated heat and continuous use.

Bright Finish for Clean, Accurate Threads

Ideal for Through-Hole Tapping

The bright finish provides a smooth cutting surface that promotes consistent chip formation and accurate thread geometry in through-hole applications. While uncoated, the polished surface allows operators to easily monitor cutting action and wear, making it well suited for controlled shop environments and precision metric threading tasks.

Proven Geometry for Through Holes

Plug Tap Design for Balanced Performance

The plug tap lead length provides an optimal balance between easy starting and full thread engagement, ensuring strong, accurate threads without excessive torque. This makes the Type 32-RNC suitable for use in CNC machines, drill presses, and rigid tapping setups where precision is essential.

Versatile Across Multiple Materials

One Tap, Many Applications

Beyond hardened steels, the Type 32-RNC performs exceptionally well in cast iron, brass, bronze, armor plate, and hard plastics, giving shops a versatile metric threading solution for mixed-material operations.

Key Features

• Metric sizes for international and OEM applications

• M42 cobalt HSS for superior durability and heat resistance

• Bright finish for clean cutting and thread visibility

• Plug tap geometry optimized for through holes

• Recommended for hardened steels Rc 30–45 and abrasive materials

For reliable metric threading in tough materials, the Norseman Type 32-RNC M42 Cobalt Bright Finish Plug Tap delivers professional-grade performance you can trust.