Precision Twist Drill 5998531 High-Speed Steel Jobber Length Drill Bit

Precision Twist Drill 5998531 is a high-speed steel (HSS) jobber length drill bit engineered for reliable, accurate drilling in a wide range of materials including steel, aluminum, cast iron, wood, and plastics. Manufactured by Precision Twist Drill — one of North America's most trusted cutting tool brands — this bit delivers consistent performance for both professional tradespeople and serious DIY users.

Key Features:

• High-speed steel (HSS) construction for durability and heat resistance
• Jobber length design provides a balance of reach and rigidity for general-purpose drilling
• 135° split-point tip for fast penetration and reduced walking on hard surfaces
• Precision-ground flutes for efficient chip evacuation and smooth cutting action
• Black oxide finish reduces friction and provides corrosion resistance
• Meets or exceeds ANSI/ASME B94.11M standards for drill bit tolerances

Precision Twist Drill has been producing premium cutting tools since 1900, and the 5998531 continues that legacy of quality. This bit is an excellent choice for maintenance, repair, and manufacturing applications where accurate hole sizing and long tool life are essential.