| Customization: | Available |
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| Customized: | Customized |
| Standard: | DIN |
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Product Name
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HSS DIN333 Center Drill Bit for Centre Drilling
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Material
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HSS 6542 (Co5%-M35,Carbide are Available)
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Surface
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Tin-coated(Amber, Bright Finishing,AlTiN coated are Available)
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Process
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Fully Ground or Milled
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Flute
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Spiral Flute
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Standard
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DIN333A (DIN333B,DIN333R are Available)
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Application
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For processing stainless steel, thick steel plate, aluminum alloy, cast iron, copper, die steel
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Features
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1.Center drill bits can be used to make conical holes for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking, as well as for producing center holds in components or work pieces with require machining between centers. 2.Available for all Kinds of Materials: Metal, Alloy, Copper, Iron, Wood, Aluminum, and so on. 3.Durable and Resistance: Center drill bit is made of HSS high speed steel, with extremely sharp blade, low consumption and durable with impact resistance, wear resistance. 4.Center drills have flutes and cutting points on both ends. this allows the user with the ability to reverse the drill and utilize both ends. |
| Type A HSS Center Drill | |||
| d | D | L | I |
| 1.00 | 3.15 | 33.50 | 1.90 |
| 1.25 | 3.15 | 33.50 | 1.90 |
| 1.60 | 4.00 | 37.50 | 2.80 |
| 2.00 | 5.00 | 42.00 | 3.30 |
| 2.50 | 6.30 | 47.00 | 4.10 |
| 3.15 | 8.00 | 52.00 | 4.90 |
| 4.00 | 10.00 | 59.00 | 6.20 |
| 5.00 | 12.50 | 66.00 | 7.50 |
| 6.30 | 16.00 | 74.00 | 9.20 |
| Type B HSS Center Drill | |||
| d | D | L | I |
| 1.00 | 4.00 | 37.50 | 1.90 |
| 1.25 | 5.00 | 42.00 | 2.20 |
| 1.60 | 6.30 | 47.00 | 2.80 |
| 2.00 | 8.00 | 52.00 | 3.30 |
| 2.50 | 10.00 | 59.00 | 4.10 |
| 3.15 | 11.20 | 63.00 | 4.90 |
| 4.00 | 14.00 | 70.00 | 6.20 |
| 5.00 | 18.00 | 78.00 | 7.50 |
| 6.30 | 20.00 | 83.00 | 9.20 |
| Type R HSS Center Drill | |||
| d | D | L | I |
| 1.00 | 3.15 | 33.50 | 3.00 |
| 1.25 | 3.15 | 33.50 | 3.35 |
| 1.60 | 4.00 | 37.50 | 4.25 |
| 2.00 | 5.00 | 42.00 | 5.30 |
| 2.50 | 6.30 | 47.00 | 6.70 |
| 3.15 | 8.00 | 52.00 | 8.50 |
| 4.00 | 10.00 | 59.00 | 10.60 |
| 5.00 | 12.50 | 66.00 | 13.20 |
| 6.30 | 16.00 | 74.00 | 17.00 |
Twist Drill Factory: 18 Years of Precision Excellence
With 18 years of expertise, our twist drill factory specializes in premium metal drill bits, wood drill bits, and annular cutters,
trusted by global brands. Certified to ISO9001, CE, RoHS, BSCI, and ICS standards, plus multiple industry-specific
certifications, we guarantee unmatched quality and compliance.
Spanning 20,000 square meter, our facility houses CNC automation and advanced machining centers,ensuring precision
and efficiency. Rigorous quality control underpins every product, exported to North/South America, Europe, the Middle
East, and beyond.
Choose a partner built on innovation, scale, and reliability. Elevate your projects with drills engineered to
outperform.
Contact us to source world-class drilling solutions!
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