Irwin 63904 3/16" TiN-Coated Jobber Length Drill Bit, 135° Split Point, 639 Series

Irwin 63904 3/16" TiN-Coated Jobber Length Drill Bit, 135° Split Point, 639 Series

The Irwin 63904 is a 3/16" jobber length drill bit from the 639 Series, featuring a titanium nitride (TiN) coating and a 135° split point engineered for reliable metal drilling. The 639 Series lineup also includes the 63912 model, giving shops and jobsites a choice of jobber bits built on the same heavy-duty web design, reduced-torque cutting lips, and TiN coating for extended tool life. Whether you're working in a professional shop or tackling a demanding home project, the 63904 is built to hold an edge and deliver consistent, clean holes drilling after drilling. Manufactured in China and shipped individually carded, the 63904 is ready for retail display or direct replacement stocking in professional tool cribs.

Key Features

• Trade Size: 3/16" jobber length bit sized for standard drilling applications in metal.
• Reduced-Torque Cutting Lips: Shorter cutting lips reduce torque when drilling in high tensile strength materials, making the bit easier to control under load.
• 135° Split Point: The self-centering split point tip reduces feed pressure for easier penetration into the workpiece without work hardening the surrounding material.
• Titanium Nitride (TiN) Coating: The TiN coating extends the life of the bit, lasting up to six times longer than standard high speed steel drill bits.
• Heavy-Duty Web Design: A reinforced web design provides extreme rigidity, helping the bit stay true and resist flex when drilling in metal applications.
• 639 Series Lineup: Offered alongside the 63912 model, giving buyers a choice of jobber bits built to the same TiN-coated, split-point specification.
• Individually Carded: Packaged individually on a card for easy retail display, inventory tracking, and replacement stocking on the job or in the shop.

Technical Specifications

• Warranty: NLW
• Bit Type: Jobber
• Country of Origin: China

Typical Applications

• Drilling in High Tensile Strength Metals
• Metal Fabrication and Machining
• Automotive and Industrial Repair Work
• General Metalworking and Maintenance Projects
• Professional Shop and Jobsite Drilling Tasks

Why Irwin?

Irwin builds the 639 Series, including the 63904 and 63912 models, around a titanium nitride coating and a heavy-duty web design so the bit can stand up to repeated use in demanding metal drilling applications. The 135° split point and shorter cutting lips work together to cut feed pressure and torque, helping the bit resist work hardening while extending its usable life well beyond standard high speed steel bits. For professionals and serious DIYers who need a jobber bit they can count on for high tensile strength materials, the Irwin 63904 delivers durable, code-shop-ready performance backed by a NLW warranty.