Drill bit Bosch 2608833781, high speed steel, 1/4 inch (6.35 mm)

Bosch 2608833781 is a high speed steel (HSS) drill bit with a 1/4 inch (6.35 mm) diameter, designed for general drilling tasks in metal, wood and plastics. The bit features a hex shank compatible with standard 1/4-inch chucks and quick-change holders, offering reliable hole quality and consistent performance for maintenance, assembly and repair work where an HSS cutting tool is appropriate.

Advantages

The HSS material provides elevated hardness and heat resistance compared with standard carbon steel, helping the bit retain sharpness under normal drilling speeds. The 1/4 inch (6.35 mm) diameter and hex shank ensure secure grip in standard chucks and impact/quick-change drivers. Designed for general-purpose use, the bit delivers repeatable hole diameter and surface finish across a range of common workshop materials, reducing the need for multiple specialty drills.

Suitable for

• Drilling sheet and plate metal (mild steel, aluminum)
• Woodworking and cabinetry holes
• Plastics and composite panels
• Maintenance, assembly and on-site repair tasks
• Use with standard 1/4-inch chucks and hex quick-change adapters

Key specifications

• Material: High speed steel (HSS)
• Diameter: 1/4 inch (6.35 mm)
• Shank type: Hex shank compatible with 1/4-inch chucks
• Suitable materials: Metal, wood, plastics
• Typical applications: Maintenance, assembly, repair, general-purpose drilling

How to use

Secure the drill bit in a compatible 1/4-inch chuck or quick-change holder until it is firmly seated. Select an appropriate drill speed for the material: lower speeds for harder metals, higher speeds for wood and plastics. Use cutting or tapping lubricant when drilling metals to reduce heat and wear. Apply steady, moderate pressure and allow the bit to cut; do not force or jam. After drilling, withdraw the bit while the spindle is still rotating briefly to clear chips, then stop the tool before removing the workpiece.

Usage recommendations

For best longevity, use coolant or cutting fluid when drilling steel and re-sharpen or replace the bit when hole quality degrades. Wear appropriate eye and hand protection and secure workpieces to prevent movement during drilling.