Norseman Drill & Tool Wire Sizes HSS Heavy-Duty NAS 907B Type 190-AN Jobber Length Twist Bit

Norseman Drill & Tool Wire Sizes HSS Heavy-Duty NAS 907B Type 190-AN Jobber Length Twist Bit

TiN-Coated Precision for Aerospace-Grade Performance

The Norseman Drill & Tool Wire Sizes HSS Heavy-Duty NAS 907B Type 190-AN Jobber Length Twist Bit is engineered for professionals who demand accuracy, durability, and repeatable results. Proudly made in the USA, this drill bit is manufactured to NAS 907B aerospace specifications, ensuring tight tolerances, consistent geometry, and superior performance across all wire gauge sizes.

Heavy-Duty HSS Construction

Built for Tough Materials and Continuous Use

Crafted from premium high-speed steel (HSS), the Type 190-AN is designed to withstand the heat and stress of drilling difficult materials such as stainless steel, alloy steels, and hardened metals. Its robust construction delivers excellent edge retention and toughness, making it ideal for production environments, fabrication shops, and maintenance operations where reliability is critical.

Titanium Nitride (TiN) Coating for Extended Tool Life

Faster Cutting, Reduced Friction, Longer Wear

The Titanium Nitride (TiN) coating significantly increases surface hardness while improving lubricity and heat resistance. This coating reduces friction at the cutting edge, promotes efficient chip evacuation, and allows higher operating speeds without sacrificing tool life. The result is smoother hole finishes, less heat buildup, and longer intervals between tool changes.

Precision Split Point Design

Accurate Starts with Minimal Walking

Featuring a 135° self-centering split point, the Type 190-AN drill bit starts cleanly on contact, reducing thrust and eliminating the need for center punching. This design improves positional accuracy and control, especially important when drilling precise wire-size holes.

Aerospace-Grade Accuracy Across Wire Sizes

Each bit is precision-ground to NAS 907B standards, ensuring excellent balance, concentricity, and repeatability. Available in a full range of wire gauge sizes, these jobber-length twist drills provide exceptional hole accuracy for applications requiring tight dimensional control.

Key Benefits at a Glance:

• Heavy-duty HSS construction for strength and toughness

• TiN coating for superior wear resistance and lubricity

• 135° split point for accurate, self-centering starts

• Precision-ground to NAS 907B aerospace specifications

• Ideal for stainless steel, alloy steels, and hardened materials

For professionals who refuse to compromise on precision or longevity, the Norseman Type 190-AN Wire Size Drill Bit delivers dependable, American-made performance on every hole.