Chicago-latrobe 47741 Cobalt Jobber Drill Bit 0.2010 in

Product Description

The CHICAGO-LATROBE 47741 is a cobalt jobber length drill bit designed for high-performance drilling in hard and abrasive materials. It carries a No. 7 wire size designation with a decimal diameter of 0.2010 inches and an overall length of 3.625 inches. The 135-degree split point reduces walking and requires less feed pressure at entry, making it well suited for production and maintenance drilling where precision and speed matter. The two-flute regular spiral design with a web-thinned, tapered web improves chip evacuation and reduces thrust in tough materials. This bit is intended for use by machinists, tool-and-die technicians, and skilled tradespeople working with demanding workpiece materials.

The 47741 is rated for drilling titanium and other high-strength materials where standard high-speed steel bits fall short. The cobalt construction provides heat resistance during extended or high-feed drilling operations. The straight cylindrical shank fits standard three-jaw chucks and collet-style drill holders commonly found on drill presses, CNC machining centers, and hand-held industrial drills. With a flute length of 2.4375 inches and a shank length of 1.1878 inches, it provides adequate chip clearance for moderate-depth holes in its size range. It meets NAS 907 Type B standards, making it appropriate for aerospace and defense-adjacent applications where specification compliance is required.

Key Features

• Cobalt construction for heat resistance and durability in hard and abrasive materials including titanium
• 135-degree split point reduces bit walking and lowers required feed pressure at hole entry
• Web-thinned, tapered web reduces drilling thrust and improves chip flow
• Regular spiral, two-flute design supports efficient chip evacuation in deep-hole drilling
• Straight cylindrical shank with 0.2010-inch shank diameter fits standard chucks and collets
• Meets NAS 907 Type B specification for use in controlled or specification-driven environments

Compatibility

Designed as a heavy-duty OEM-style replacement or new-installation drill bit for use in standard three-jaw chucks and collet holders accepting a 0.2010-inch straight cylindrical shank. Suitable for drill presses, CNC machining centers, and industrial hand drills where NAS 907 Type B compliance is specified.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople familiar with cutting tool selection and safe drilling practices. Secure the shank fully in the chuck or collet before operation and verify runout before beginning production drilling. Do not exceed the recommended feed and speed ratings for the workpiece material. Inspect the cutting edges and point geometry before each use and remove from service at first sign of chipping or dullness.