Chicago-latrobe 45618 9/32 Inch Hss Jobber Drill Bit

Product Description

The CHICAGO-LATROBE 45618 is a jobber-length twist drill bit designed for high-performance drilling in ferrous metals and hard alloys. Built from high-speed steel with an oxide finish, it measures 9/32 inch (0.2812 inch decimal) in diameter with a 4-1/4 inch overall length and a 2-15/16 inch flute length. The 135-degree split point reduces walking at the start of a cut and decreases the thrust required to penetrate hard materials. A tapered web with web thinning further reduces cutting resistance. This bit is a heavy-duty tool suited for machinists, pipefitters, ironworkers, and maintenance tradespeople who drill into cast iron, stainless steel, and carbon steel regularly.

The 45618 fits standard drill presses, hand drills, and magnetic drills that accept a straight-cylindrical shank. Its regular spiral and right-hand cut make it a conventional jobber-length bit appropriate for general-purpose hole-making in metalworking and mechanical trade applications. The NAS 907 Type B specification indicates it meets established aerospace and industrial tooling standards, making it a reliable option for both production and field service environments where dimensional consistency matters.

Key Features

• 135-degree split point reduces drill walking and lowers required feed pressure on hard metals
• High-speed steel construction with oxide coating for heat resistance and extended tool life
• Web-thinned, tapered web design reduces cutting resistance through tough materials
• Right-hand, regular spiral flute for efficient chip evacuation
• Straight-cylindrical shank fits standard chucks without adapters
• Meets NAS 907 Type B specification for consistent dimensional tolerancing

Compatibility

Designed for drilling cast iron, stainless steel, and carbon steel. Primary workpiece materials listed by the manufacturer are cast iron, stainless steel, and steel. Fits any drill press, hand drill, or magnetic drill chuck sized to accept a 9/32 inch straight-cylindrical shank.

Installation Notes

Installation of this drill bit is performed by machinists, maintenance technicians, pipefitters, and general trade professionals. Secure the straight shank firmly in the chuck before use and verify the bit is centered and true before applying feed pressure. Always wear appropriate eye protection when drilling metal, and use cutting fluid when working with stainless steel or hardened alloys to reduce heat buildup and extend bit life. Do not exceed the recommended feed rate for the workpiece material, as excessive pressure can snap smaller-diameter bits or cause premature edge wear.