Chicago-latrobe 49218 9/32 in Screw Machine Drill Bit Hss

Product Description

The CHICAGO-LATROBE 49218 is a screw machine length drill bit designed for high-production drilling in metalworking and fabrication applications. Built from high speed steel with a coated finish, this bit features a 135-degree split point that reduces walking and requires no center punch on most surfaces. The stub-length body provides added rigidity compared to jobber-length bits, making it well suited for drilling in tight clearances or on drill presses and CNC equipment. With a 9/32-inch (0.2812-inch) diameter and a parallel web-thinned construction, it delivers consistent hole quality in demanding materials. Licensed tradespeople and machinists working in production environments will find this format practical for repetitive operations.

This drill bit is intended for use on cast iron and steel workpieces, covering a range of industrial and mechanical fabrication tasks. The screw machine length format is a standard choice when working in restricted spaces or when minimizing deflection is a priority. The right-hand spiral flute design clears chips efficiently during through-hole and blind-hole drilling operations on manual or CNC-controlled equipment.

Key Features

• 9/32-inch (0.2812-inch) diameter with a tight tolerance of +0.0000 to -0.0010 inches for consistent fit
• 135-degree split point reduces drill walking and entry force
• Web-thinned parallel web lowers cutting resistance in harder materials
• High speed steel construction with coated finish for improved wear resistance
• Screw machine (stub) length body increases rigidity and reduces deflection
• Meets NAS 907 and ISO standards for heavy-duty drilling applications

Compatibility

Designed as a heavy-duty OEM-style screw machine drill bit suitable for use on cast iron and steel workpieces in standard drill chucks accepting straight-cylindrical shanks.

Installation Notes

This bit is installed by a machinist or metalworking technician into a drill press, CNC machine, or hand drill with a compatible chuck. Ensure the machine is fully powered down and the chuck is secured before changing bits. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life, noting this bit does not support coolant-through operation. Follow applicable shop safety standards and wear appropriate PPE when operating drilling equipment.