Drill bit Irwin 10502401 twist drill bit Ø 1.2 cm, 1 pc

Irwin 10502401 is a precision ground twist drill bit with a 1.2 cm diameter supplied as a single piece for general drilling tasks. Manufactured to DIN 338 standards, this drill bit features a reduced cylindrical shank and a universal 118° point shape, offering compatibility with standard drills and a range of common materials. The ground cutting edges and flute geometry are designed to deliver fast drilling performance and accurate hole finishing.

Advantages

The ground quality and precision-ground cutting edges provide consistent hole quality and reduce the need for secondary finishing. The reduced shank allows use in drill chucks that accept smaller shank diameters while maintaining stability during operation. The universal 118° point and ground flute support effective chip evacuation and reliable centering across plastic, soft metals and wood.

Suitable for

• Drilling holes in plastic components
• Drilling soft metals such as aluminum and brass
• Woodworking and furniture assembly
• General maintenance and repair tasks

Key specifications

• Drill type: Twist drill bit
• Diameter: 1.2 cm
• Overall length: 151 mm
• Point angle: 118° universal point
• Shank: Cylindrical, reduced shank design
• Flute: Ground flute for fast chip removal and accuracy
• Cutting edges: Precision ground for improved finish
• Standards: Manufactured to DIN 338
• Quantity: 1 piece

How to use

Select an appropriate drill or drill press that accepts the cylindrical reduced shank and secure the bit in the chuck with adequate clamping torque. Match drill speed and feed to the material: lower speeds for soft metals and higher speeds for plastics and wood, using steady pressure and avoiding excessive side load. For best results, start with a pilot mark or center punch on metal to ensure accurate positioning, and clear chips periodically to prevent clogging of the flute.

Usage recommendations

Use cutting lubricant when drilling soft metals to extend bit life and improve surface finish. For plastics, use moderate speed and minimal thrust to avoid melting. Replace the bit if wear or chipping appears on the cutting edges to maintain hole accuracy and surface quality.