Precision Twist Drill 5999886 Letter R HSS Jobber Length Drill Bit 0.339"

Precision Twist Drill (PTD) 5999886 is a Letter Size "R" high-speed steel (HSS) jobber-length drill bit with a diameter of 0.339 inches. Manufactured to strict tolerances, this drill bit is designed for reliable performance in general-purpose drilling applications across a wide range of materials including steel, aluminum, cast iron, wood, and plastics.

Precision Twist Drill is an industry-recognized manufacturer of premium cutting tools, and this jobber-length bit reflects their commitment to consistent geometry, sharp cutting edges, and durable construction. The standard 118° point angle provides versatility for everyday drilling tasks in both production and maintenance environments.

Key Features:

• Size: Letter R — 0.339" (8.611 mm) diameter
• Material: High-Speed Steel (HSS) for durability and heat resistance
• Point Angle: 118° conventional point for general-purpose use
• Length Style: Jobber length — the most common, versatile drill bit length
• Finish: Bright (uncoated) finish, suitable for a wide range of materials
• Shank: Straight shank for use with standard drill chucks
• Manufacturer: Precision Twist Drill (PTD) — a trusted name in industrial cutting tools

This drill bit is well-suited for machinists, maintenance technicians, and industrial professionals who require consistent, accurate hole sizing. Compatible with standard drill presses, CNC machines, and hand-held power drills.