Norseman Drill & Tool M42 Cobalt Taps for Hardened Steel & Iron

Norseman Drill & Tool M42 Cobalt Taps for Hardened Steel & Iron

High-Performance Threading for Tough Materials

Norseman Drill & Tool M42 Cobalt Taps are engineered for demanding threading applications in hardened and high-strength materials. Designed specifically for professionals working with difficult substrates, these M-42 cobalt plug taps deliver exceptional durability, heat resistance, and thread quality in through-hole tapping operations.

M-42 Cobalt Steel for Extreme Conditions

Built to Withstand Heat and Wear

Manufactured from premium M-42 cobalt high-speed steel, these taps offer superior red hardness and wear resistance compared to conventional HSS taps. This makes them ideal for tapping mold steel and hardened steel with Rockwell C hardness between C30 and C45, where standard tools often fail prematurely. The cobalt alloy maintains cutting edge strength under high heat, ensuring consistent performance and longer tool life.

Titanium Coating for Extended Tool Life

Smoother Threads, Longer Service

Norseman M42 cobalt taps are available with a titanium coating, which significantly enhances lubricity and surface hardness. Titanium-coated M-42 plug taps last up to twice as long as uncoated taps, reducing tool change frequency and downtime. The lubricious coating promotes smoother chip flow and cleaner thread finishes, even in hard or abrasive materials.

Plug Tap Geometry for Through-Hole Applications

Reliable Chip Evacuation and Accuracy

The plug tap design is optimized for through-hole tapping, allowing chips to move forward efficiently and reducing the risk of chip packing. This geometry ensures accurate thread formation and dependable results in production and toolroom environments.

Versatile Material Capability

One Tap, Multiple Applications

In addition to hardened steels, these taps perform exceptionally well in cast iron, brass, bronze, armor plate, and hard plastics. Their versatility makes them a valuable addition to shops handling a wide range of materials.

Key Features

• Premium M-42 cobalt steel construction

• Designed for hardened steel (C30–C45) and mold steel

• Titanium coating for longer life and smoother threads

• Plug tap style for through-hole applications

• Excellent performance in cast iron, brass, bronze, armor plate, and hard plastics

• Trusted Norseman Drill & Tool quality

For high-performance threading in tough materials, Norseman Drill & Tool M42 Cobalt Taps deliver strength, precision, and durability professionals depend on.