Norseman Drill and Tool Type 32-RNCN Metric M42 Cobalt Titanium Nitride Finish Plug Tap

Norseman Drill & Tool Type 32-RNCN Metric M42 Cobalt Titanium Nitride Plug Tap

Extended Tool Life and Precision Threading in Hardened Materials

The Norseman Drill & Tool Type 32-RNCN Metric M42 Cobalt Titanium Nitride Plug Tap is engineered for high-performance threading in demanding materials where durability, accuracy, and longevity are critical. Designed specifically for through-hole tapping, this metric plug tap is ideal for both production machining and heavy-duty maintenance applications.

M42 Cobalt Steel for Hardened Steel Performance

Optimized for Rc 30–45 Materials

Manufactured from premium M42 cobalt high-speed steel, the Type 32-RNCN offers exceptional hot hardness, wear resistance, and edge retention. This makes it especially effective for mold steel and hardened steel with Rockwell C hardness between C30 and C45, where standard HSS taps may struggle. The cobalt alloy maintains cutting stability under high heat and continuous operation, ensuring consistent results in tough materials.

Titanium Nitride Coating for Longer Tool Life

Smoother Threads and Reduced Friction

The Titanium Nitride (TiN) coating significantly increases surface hardness and adds lubricity to the cutting edges. Compared to uncoated taps, TiN-coated M42 taps can last up to twice as long, reducing tool changes and downtime. The low-friction coating promotes smoother chip flow, lower torque, and cleaner, more accurate threads—especially important in hardened steels and abrasive alloys.

Plug Tap Geometry for Through Holes

Balanced Lead for Accuracy and Strength

The plug tap design provides an ideal balance between easy starting and full thread engagement, making it perfect for through-hole applications. This geometry ensures strong, uniform threads while maintaining precise pitch diameter and thread form in metric specifications.

Versatile Material Capability

One Tap for Multiple Applications

In addition to hardened and mold steels, the Type 32-RNCN performs reliably in cast iron, brass, bronze, armor plate, and hard plastics, offering excellent versatility across mixed-material environments.

Key Features

• Metric plug tap for through-hole threading

• M42 cobalt HSS for superior heat and wear resistance

• Titanium Nitride coating for extended tool life and smooth threads

• Ideal for hardened steels Rc 30–45

• Suitable for cast iron, non-ferrous metals, and hard plastics

For precision metric threading with maximum durability, the Norseman Type 32-RNCN M42 Cobalt TiN Plug Tap delivers professional-grade performance in the toughest applications.