Drill Bit Set Irwin HSS-CNC DIN338, 5 pcs (2, 3, 4, 5, 6 mm) in case

Irwin HSS-CNC DIN338 drill bit set contains five high-speed steel twist drills in sizes 2 mm, 3 mm, 4 mm, 5 mm and 6 mm, supplied in a compact plastic case. Manufactured to the DIN338 standard from HSS-CNC material, the set is intended for precision drilling in metal and for general workshop tasks. The case keeps bits organised for transport and storage and protects cutting edges between uses.

Advantages

The HSS-CNC composition provides heat resistance and consistent cutting performance when drilling ferrous and non-ferrous metals. Conformance to the DIN338 geometry ensures predictable chip evacuation and straight drilling. Supplied in a hard plastic case, the set is easy to carry and store, reducing the risk of damage or loss of individual bits. The selection of sizes covers common pilot and through-drilling needs in small fabrication, maintenance and repair work.

Suitable for

• Drilling holes in mild steel, stainless steel and non-ferrous metals
• Workshop and maintenance tasks with handheld drills and drill presses
• Creating pilot holes for tapping and fastening
• General metalworking, fabrication and repair jobs

Key specifications

• Material: HSS-CNC (high-speed steel)
• Standard: DIN338 twist drill geometry
• Set contents: five twist drills — 2 mm, 3 mm, 4 mm, 5 mm, 6 mm
• Packaging: hard plastic storage case
• Intended use: drilling metal with handheld and machine tools

How to use

Select the appropriate drill diameter for the required hole size and secure the workpiece. Clamp the bit in the drill chuck ensuring it is centred and held firmly. When drilling metal, use a suitable cutting lubricant to reduce heat and prolong bit life. Start at low speed to establish the centre, then increase speed according to material and bit diameter while applying steady, moderate pressure. Clear chips regularly and allow the bit to cool between prolonged passes.

Usage recommendations

For best results when drilling harder metals or thicker sections, use cutting fluid and operate at lower speeds. Re-sharpen worn bits where possible or replace them to maintain drilling accuracy; store the bits in the supplied case to prevent damage to the cutting edges.