Chicago-latrobe 45722 Jobber Drill Bit Size 52 Hss 135 Degree

Product Description

The CHICAGO-LATROBE 45722 is a jobber length twist drill bit designed for precision drilling in ferrous metals and hard materials. It carries a wire gauge size 52, equal to 0.0635 inches in diameter, and is manufactured from high speed steel with an oxide coating that helps reduce friction and extend service life in production environments. The 135-degree split point geometry allows the bit to start on contact without a center punch, reducing walking on smooth or hard surfaces. At 1-7/8 inches overall length, this is a compact, standard jobber-length tool suited to hand drills, drill presses, and CNC equipment. Licensed trade technicians and machining professionals install and use this bit in metal fabrication, maintenance, and assembly operations.

This drill bit is built for drilling cast iron, stainless steel, and carbon steel. The regular spiral flute and tapered web configuration support efficient chip evacuation in through-hole and blind-hole applications. The straight-cylindrical shank at 0.0635 inches in diameter seats securely in standard keyless or keyed chucks. It conforms to NAS 907 Type B standards, making it appropriate for aerospace-adjacent and heavy-duty industrial work where dimensional consistency and performance are required. It is sold as a single bit with a minimum order quantity of 12 units.

Key Features

• Wire gauge size 52 (0.0635 inches) with tight diameter tolerance of -0.0005 to 0.0000 inches for consistent hole sizing
• 135-degree split point reduces thrust force and eliminates the need for center-punching on hard materials
• High speed steel construction with oxide finish for reduced friction and improved tool life
• Web-thinned, tapered web design promotes effective chip evacuation in spiral flute channel
• Straight-cylindrical shank compatible with standard drill chucks across corded, cordless, and bench drill equipment
• Meets NAS 907 Type B specification for heavy-duty, high-performance drilling applications

Compatibility

Designed for use with cast iron, stainless steel, and carbon steel workpieces. The straight-cylindrical shank fits standard drill chucks accepting bits in the 0.0500 to 0.1000 inch diameter range.

Installation Notes

This bit is installed and operated by machinists, maintenance technicians, and metalworking professionals. Secure the straight shank firmly in the chuck before operation and verify chuck runout to maintain hole accuracy at this small diameter. Always wear appropriate eye protection when drilling ferrous metals and use cutting fluid on stainless steel to reduce heat buildup. Consult applicable shop safety standards and equipment manufacturer guidelines for recommended spindle speeds at this bit diameter.