Norseman Drill and Tool Type 24-RNCN Fractional M42 Cobalt Titanium Nitride Finish Plug Tap

Norseman Drill & Tool Type 24-RNCN Fractional M42 Cobalt TiN Plug Taps

Premium Threading Performance for Hardened and Abrasive Materials

The Norseman Drill & Tool Type 24-RNCN Fractional M42 Cobalt Titanium Nitride Plug Tap is engineered for demanding threading applications where strength, accuracy, and tool life are critical. Designed for through-hole tapping, this high-performance plug tap combines advanced M42 cobalt metallurgy with a Titanium Nitride (TiN) coating to deliver exceptional durability in tough materials.

M42 Cobalt Steel for Hardened Applications

Built for Rc 30–45 Materials

Manufactured from premium M42 cobalt high-speed steel, Type 24-RNCN taps provide superior hot hardness, edge retention, and resistance to abrasive wear. They are specifically recommended for mold steel and hardened steel with Rockwell C hardness between C30 and C45, where standard HSS taps struggle. The cobalt alloy maintains cutting performance under heat, reducing premature dulling and breakage in production or maintenance environments.

Titanium Nitride Coating for Extended Tool Life

Smoother Threads, Less Friction

The Titanium Nitride (TiN) coating dramatically increases surface hardness and adds lubricity at the cutting edge. TiN-coated M42 plug taps are proven to last up to twice as long as uncoated taps, reducing tool change frequency and overall machining costs. The low-friction coating also promotes smoother chip flow and cleaner thread finishes, even in difficult materials.

Plug Tap Geometry for Through Holes

Consistent Threads and Reliable Results

The plug tap configuration offers an ideal lead for through-hole applications, balancing efficient cutting action with precise thread depth. This geometry ensures reliable performance in CNC machining centers, drill presses, and general shop use.

Broad Material Versatility

One Tap for Multiple Materials

In addition to hardened steels, the Type 24-RNCN performs exceptionally well in cast iron, brass, bronze, armor plate, and hard plastics, making it a versatile solution for mixed-material operations.

Key Features

• Fractional sizes for standard inch threading

• M42 cobalt HSS construction for extreme durability

• Titanium Nitride (TiN) coating for longer tool life

• Plug tap design optimized for through holes

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

For precision threading where performance and longevity matter most, the Norseman Type 24-RNCN M42 Cobalt TiN Plug Tap delivers professional-grade results every time.