6pcs M35 Center Drill Bit Set | Precision Centering for Metal Drilling | HSS 6542 Steel

Achieve precise and accurate hole starting with this professional 6-piece HSS center drill bit set. Made from durable M35 high-speed steel, these bits are engineered for superior centering in metal, p...
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Questions about this product
- What are center drill bits used for?
- They start an accurate pilot hole so your regular drill bit doesn't wander. The 60-degree tip makes a clean starter dimple right on target. Machinists also use them to center work for lathe turning.
- What are these bits made of and can they cut hard metal?
- They're M35 high-speed steel, hardened to about 62 to 64 HRC. That handles steel, cast iron, and non-ferrous metals, with heat resistance up to around 600°C. The cobalt content gives longer tool life in tough material.
- Will these fit a standard drill chuck or lathe?
- Yes. They have straight shanks, so they grip securely in drill chucks, lathe tailstocks, and milling machines. The h6 shank tolerance keeps them running true for accurate centering.
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