Precision Twist Drill 5999700 R51 HSS Taper Length Drill Bit 15/16 in

The Precision Twist Drill 5999700 is a R51 Series General Purpose Taper Length Drill designed for professional machining applications requiring deeper hole depths than standard jobber-length drills can achieve. With a 15/16 in (0.9375 in) drill diameter and a 10-3/4 in overall length, this HSS taper length drill bit is built for accuracy and durability across a wide range of materials.

Key Features:

• Drill Size: 15/16 in (0.9375 in decimal)
• Overall Length (OAL): 10-3/4 in
• Flute Length: 6-1/8 in
• Cutting Depth: 6XD
• Flutes: 2, spiral configuration with high flute angle for efficient chip evacuation
• Shank: 15/16 in straight shank
• Point Angle: 118° conventional point
• Cutting Direction: Right hand
• Material: High Speed Steel (HSS)
• Finish: Bright — smooth, polished surface finish
• Series: JABRO® HSS-Co JCO710

Compatible Materials:

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

The taper length design allows this drill to reach deeper than standard jobbers length drills, while the high-angle spiral flutes promote excellent chip flow — particularly in softer materials such as aluminum, wood, and plastic. The bright finish reduces friction and provides a smooth cutting action. Ideal for metalworking, fabrication, and industrial machining environments.