Precision Twist Drill 5998305 5/8" HSS Jobber Length Drill Bit

The Precision Twist Drill 5998305 is a 5/8-inch diameter High Speed Steel (HSS) jobber-length twist drill bit designed for reliable, accurate drilling in a wide range of materials including mild steel, aluminum, brass, copper, and wood. Built to the demanding standards PTD has maintained for over a century, this bit delivers consistent performance in both production and general-purpose applications.

Key Features:

• Diameter: 5/8 inch (0.6250")
• Style: Jobber length — the most common and versatile drill bit length
• Material: High Speed Steel (HSS) for durability and heat resistance
• Point Style: 118° conventional point for easy starting and general-purpose use
• Shank Type: Straight shank — compatible with standard drill chucks and press setups
• Finish: Bright (uncoated) for easy visual inspection of wear
• Flute Style: Standard spiral flute for efficient chip evacuation
• Manufactured to ANSI standards for precise tolerances and interchangeability

Precision Twist Drill has been an industry leader in cutting tool manufacturing since 1900. The 5998305 is suited for use in handheld drills, drill presses, and light CNC applications. Its jobber-length geometry strikes the optimal balance between rigidity and reach, making it a go-to choice for machinists, maintenance professionals, and fabricators alike.