Drill bit Proline 3 mm Ø, length 65 mm — model 81903, 1 pc

Proline drill bit 3 mm Ø, length 65 mm — model 81903 is a single straight-shank drill bit designed for metalworking and thin sheet materials. The 3 mm diameter and 65 mm overall length make this bit suitable for precision drilling tasks and small repair jobs. It fits standard hand drills and drill drivers and is supplied as a single piece for targeted use when a compact, accurate hole is required.

Advantages

The Proline 81903 drill bit offers a consistent 3 mm diameter and a 65 mm length for controlled penetration depth. Its straight shank ensures compatibility with common chucks and drill drivers, providing reliable centring and reduced wobble during operation. Supplied as a single piece, it is convenient for one-off tasks or as a spare for toolkits where a precise small-diameter metal drill is needed.

Suitable for

• Drilling small-diameter holes in metal sheets and thin metal parts
• Precision repair and maintenance work
• Temporary or single-use applications requiring a 3 mm hole
• Use with hand drills and portable drill drivers

Key specifications

• Diameter: 3 mm
• Overall length: 65 mm
• Shank type: straight shank
• Quantity: 1 piece
• Recommended material application: metal and thin sheet materials

How to use

Secure the drill bit in the drill chuck and tighten firmly. Mark the drilling point and, if necessary, use a centre punch to prevent slippage. Start drilling at low speed to establish the hole, then increase speed as appropriate for the material. Use steady, moderate pressure and withdraw occasionally to clear chips. For metal and thin sheets, use cutting fluid or lubricant to extend tool life and improve finish when applicable.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and gloves. Match drill speed and lubrication to the metal being worked to reduce wear and prevent overheating. Replace the bit if signs of excessive wear or chipping appear to maintain hole quality and operator safety.