Precision Twist Drill 6000434 Letter Size R HSS Jobber Length Drill Bit

Precision Twist Drill 6000434 is a Letter Size "R" (0.3390") High-Speed Steel jobber-length twist drill bit, engineered for reliable performance in a wide range of drilling applications. Manufactured by Precision Twist Drill — one of North America's most trusted names in cutting tools — this bit delivers consistent accuracy and long service life in both production and maintenance environments.

Key Features:

• Letter Size R — 0.3390" diameter for precise hole sizing
• High-Speed Steel (HSS) construction — resists heat and wear during high-speed drilling
• Jobber length — standard flute and overall length for versatile general-purpose use
• 135° split-point tip — reduces walking and enables faster penetration without a center punch
• Right-hand cutting — compatible with standard drill presses, hand drills, and CNC equipment
• Bright (uncoated) finish — suitable for drilling mild steel, aluminum, wood, and plastics

The Precision Twist Drill 6000434 is ideal for machinists, maintenance technicians, and fabricators who require a dependable, precision-ground drill bit in Letter size R. PTD's rigorous manufacturing standards ensure tight tolerances and a sharp cutting edge right out of the box.