Precision Twist Drill 5997564 #54 Cobalt Jobber Length Drill Bit

The Precision Twist Drill 5997564 is a #54 wire gauge cobalt jobber length drill bit engineered for demanding drilling applications in hard and abrasive materials. Part of PTD's R15CO series, this bit is manufactured from M42 cobalt high-speed steel (8% cobalt), offering superior heat and wear resistance compared to standard HSS bits.

Key Features:

• M42 Cobalt HSS (8% Co) construction for extended tool life in tough materials
• Wire gauge #54 diameter — precise sizing for close-tolerance applications
• 135° split point tip for fast penetration and reduced walking on entry
• Jobber length for versatility across a wide range of drilling depths
• Right-hand cut with standard flute geometry for efficient chip evacuation
• Bright (uncoated) finish — ideal for use with cutting fluids
• Suitable for stainless steel, high-temperature alloys, cast iron, titanium, and other hard metals

Precision Twist Drill has been a trusted name in American-made cutting tools since 1900. The 5997564 is an excellent choice for machinists, toolmakers, and maintenance professionals who require consistent, repeatable results in production or job shop environments.