Precision Twist Drill 5998686 R10 5/8 in HSS Jobber Length Drill Bit Steam Tempered

The Precision Twist Drill 5998686 is a 5/8 in R10 Series jobber length drill bit engineered for general-purpose hole-making in a wide range of ferrous and non-ferrous materials. Built from high-speed steel (HSS) with a steam tempered finish, this drill bit delivers reliable performance in both portable drill and drill press applications.

Key Features:

• Drill Size: 5/8 in (0.6250 in decimal)
• Series: R10 General Purpose Jobber Length
• Overall Length: 7-1/8 in
• Flute Length: 4 x D cutting depth
• Point Angle: 118° conventional point for accurate positioning and clean entry
• Cutting Direction: Right-hand cut
• Shank Type: Straight shank
• Material: High-speed steel (HSS) for excellent wear resistance in general-purpose applications
• Finish: Steam tempered — reduces wear and chip welding in harder ferrous materials for increased lubricity
• Flutes: 2 spiral flutes for efficient chip evacuation

Compatible Materials:

• Magnetic soft steel and structural steel
• Plain carbon and alloy/hardened steel
• Free machining stainless steel (ferritic and austenitic)
• Graphite and malleable cast iron
• Titanium, nickel, copper, brass, and bronze

Sold individually. The Precision Twist Drill R10 Series is a trusted choice for machinists, fabricators, and maintenance professionals requiring consistent, repeatable drilling results across a broad range of materials.