Drill Bit Bosch 4 mm HSS – 2608680274

Bosch 4 mm HSS drill bit is a high-speed steel cutting tool engineered for drilling precise 4 mm diameter holes. Designed for general-purpose use, this 4 mm HSS bit is compatible with hand drills and drill presses and is intended primarily for metalworking and other materials suitable for HSS tooling. The bit’s compact size makes it convenient for maintenance, repair and DIY tasks where accuracy and repeatable hole quality are required.

Advantages

The HSS construction provides a balance of toughness and hardness for reliable cutting performance when drilling into steel and other metals. The 4 mm diameter offers precise hole sizing and repeatability while the standard flute geometry facilitates chip evacuation and stable cutting at typical drilling speeds. The bit’s compatibility with handheld drills and bench machines makes it versatile for workshop and field use.

Suitable for

• Drilling small diameter holes in steel and non-ferrous metals
• General maintenance and repair tasks
• DIY projects requiring accurate 4 mm holes
• Use with hand drills and drill presses

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 4 mm
• Geometry: standard twist/fluted design for chip removal
• Intended materials: steel and other metals compatible with HSS drills
• Typical applications: metalworking, maintenance, repair, DIY

How to use

Secure the drill bit in the chuck of a hand drill or drill press, ensuring it is tightened and centered. Mark the drilling point and, if necessary, use a center punch to prevent walking. Start drilling at a moderate speed appropriate for the metal being worked, using cutting fluid or lubricant when drilling harder steels to reduce heat and extend bit life. Withdraw periodically to clear chips and avoid excessive buildup in the flutes. After drilling, deburr the hole as needed for a clean finish.

Usage recommendations

For best results, select drilling speeds and feed rates that match the material; use light cutting oil on steel to reduce heat and wear. Replace the bit when wear or chipping affects hole accuracy. Store the bit in a dry, protected case to prevent damage and corrosion.