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Key Features
- Made from high-quality high-speed steel (HSS) for long-lasting performance
- Type A design with 60° countersink and pilot drill for accurate center holes
- Suitable for lathe centers, shaft work, and general machining
- Heat-resistant and durable for heavy-duty marine applications
- Available in multiple sizes to fit various workpiece diameters
- Meets IMPA 630501 specification for ship supply standards
Technical Specifications
| Specification | Details |
|---|---|
| Material | High Speed Steel (HSS) |
| Type | A (60° countersink, no protective chamfer) |
| Sizes Available | #0 (1/16"), #1 (3/32"), #2 (1/8"), #3 (3/16"), #4 (1/4"), #5 (5/16") |
| Shank Diameter | 3/32" to 1/2" depending on size |
| Overall Length | 1-3/8" to 4" depending on size |
| Cutting Angle | 60° countersink, 118° pilot point |
| Packaging | Individual or set in protective case |
| IMPA Code | 630501 |
Frequently Asked Questions
What is a Type A center drill?
Type A center drills feature a 60° countersink with a pilot drill and no protective chamfer. They are the most common type used for standard center holes in lathe work.
What sizes are available for these center drills?
These center drills are available in sizes #0 through #5, covering pilot diameters from 1/16" to 5/16" and shank diameters up to 1/2".
Are these drill bits suitable for stainless steel?
Yes, high-speed steel center drills can be used on stainless steel, though slower speeds and cutting fluid are recommended to prevent overheating.
What is the IMPA code for this product?
IMPA 630501 corresponds to a center drill set made of high-speed steel, suitable for ship chandler supply and marine engineering applications.
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