Chicago-latrobe 49418 Screw Machine Drill Bit 0.076 in

Product Description

The CHICAGO-LATROBE 49418 is a screw machine length drill bit designed for high-throughput drilling in metalworking and fabrication applications. Built from high speed steel with a coated finish, this bit measures 0.076 inches in diameter (Wire Size 48) and features a 135-degree split point that reduces walking and lowers the thrust required to start a hole. The shortened screw machine length body delivers added rigidity compared to jobber-length bits, making it well suited for drilling operations where deflection control matters. Two spiral flutes evacuate chips efficiently, and the straight cylindrical shank seats securely in standard drill chucks.

This bit is intended for production and maintenance drilling in cast iron and steel. The screw machine length format is common in CNC machining centers, drill presses, and turret lathes where reduced overhang is preferred for positional accuracy. The heavy-duty grade construction handles repetitive cycling without rapid edge degradation, making it a practical choice for shops running high-volume hole patterns in ferrous materials. Licensed tradespeople, machinists, and maintenance technicians working in manufacturing, mechanical contracting, and industrial service environments will find this bit appropriate for daily use.

Key Features

• 135-degree split point reduces drill walking and lowers entry thrust on hard ferrous materials
• High speed steel construction with coated finish for improved wear resistance
• Screw machine length body provides added rigidity and reduced deflection
• Web-thinned, parallel web configuration maintains cutting efficiency through the full flute length
• Right-hand cut, regular spiral flutes promote clean chip evacuation in cast iron and steel
• Meets NAS 907 and ISO standards for dimensional consistency and performance classification

Compatibility

Designed as a heavy-duty OEM-style replacement or direct-use screw machine drill bit for applications in cast iron and steel, compatible with any standard drill chuck accepting a 0.076-inch straight cylindrical shank.

Installation Notes

Installation of this bit is performed by machinists or qualified maintenance technicians using a drill press, CNC machining center, or turret lathe. Secure the straight cylindrical shank fully in the chuck before operation and verify runout is within tolerance. Always use appropriate cutting fluid or coolant rated for the workpiece material when drilling steel or cast iron at production feed rates. Inspect the cutting edges for wear or chipping before each use and replace the bit if edge integrity is compromised.