Drill bit set Irwin 10502279 — 10 pcs, 4.8 mm drill bits

Irwin 10502279 is a set of 10 precision drill bits with a 4.8 mm diameter designed for general-purpose drilling. Each bit is manufactured to DIN 338 standards with ground quality and precision ground cutting edges. The bits have a cylindrical shank and a universal 118° point shape, supplied in a Quadro Pack to keep replacements organized and readily available during projects.

Advantages

The drill bits feature precision ground cutting edges and a ground flute for fast chip removal and consistent hole finishing. Conforming to DIN 338 ensures uniform geometry and reliable performance across the set. The universal 118° point and ground quality enable effective drilling in a range of common materials while the cylindrical shank provides compatibility with standard drill chucks. A pack of 10 identical bits allows for quick replacement when bits become worn, reducing downtime on repetitive tasks.

Suitable for

• Drilling holes in plastic
• Drilling soft metals (e.g., aluminium, brass)
• Drilling in wood for fastening and joinery
• Repeatable production or maintenance work requiring multiple identical bits

Key specifications

• Drill bit diameter: 4.8 mm
• Length: 86 mm
• Point angle: 118° universal point
• Shank type: cylindrical shank
• Manufacturing standard: DIN 338
• Flute: ground flute for fast chip removal
• Cutting edges: precision ground
• Quantity: 10 pieces
• Packing: Quadro Pack

How to use

Select an appropriate drill speed and clamp the cylindrical shank securely in the drill chuck. Mark the drilling location and, if required, use a center punch to prevent bit walking. Apply steady pressure and allow the bit to cut without forcing; for soft metals and plastics use moderate speed to reduce heat buildup, and for wood use higher speeds as appropriate. Clear chips regularly and replace bits from the pack when wear degrades hole quality.

Usage recommendations

Use cutting lubricant or cooling when drilling soft metals to prolong bit life and improve finish. For precise positioning, pilot drill or use a center punch before using the 4.8 mm bit. Store bits in the supplied Quadro Pack to protect cutting edges and keep matched replacements on hand.