DIN1897 Double Ends HSS twist Drill Bit

Technical Data

1. Material & Process: Made of HSS like M2, M35, 4241; adopts fully ground process, right-hand cutting.
2. Dimensions: Complies with DIN1897, diameter 1.0–12.0mm (double-ended type). Straight shank; 118° or 135° split point. For example, 3mm bit has 11mm working length and 46mm overall length.
3. Other Specs: Surface finishes include bright, amber, or black oxide. Solid center shank for chucking, with flutes and split points on both ends.

Advantages

1. Double-ended design extends service life; reverse it when one end dulls, cutting tool change time and costs.
2. 135° split point enables self-centering, avoiding deviation without pre-punching.
3. HSS ensures good wear and heat resistance; coatings like amber reduce friction and moisture damage.
4. Short length and full grinding boost rigidity, facilitate chip evacuation, and avoid clogging during drilling.

Areas of Application

1. Metals: Suitable for sheet steel, cast iron, malleable iron, copper, and brass (≤HRC35), also fits low-alloy steel with strength ≤1000N/mm².
2. Non-metals: Applies to drilling plastics and wood in light processing.
3. Scenarios: Matches handheld drills, bench drills, and machining centers. Used in small-batch production, equipment maintenance, and DIY projects requiring frequent drilling.