Round Metal File for Enlarging Holes and Shaping Internal Curves
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When You'll Get It:Dec 13 - Dec 17
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Shipping & Support: In-stock items ship in 24 hours; custom orders ship per contract. Free shipping on orders over $10,000. For bulk buys, get a personal support rep and quick reimbursement if anything's defective.
The circular section follows the inside of a drilled hole or a concave surface. It distributes contact around that curve, making it easier to enlarge a hole, adjust an internal radius or smooth a cylindrical opening. It is suited to fabrication, metalworking, machinery repair and tool maintenance.
Product Details
The blade is made from T12 carbon tool steel with a stated carbon content of 1.15–1.25% and hardness of 60–65 HRC. The process includes hot forging, grinding, cutting the teeth, quenching and sandblasting. Separate tables list the available GB and DIN diameters.
Technical Specifications
On a narrow screen, swipe across a wide table to see the remaining columns.
| Parameter | Description | Material | Carbon Steel / Alloy Steel |
|---|---|---|---|
| Product Type | Round File | Hardness | HRC 60-65 |
| Cross Section | Round | Application | Metal, Wood |
| Cut Types | Single Cut | Standard | DIN / GB |
| Length | 4" / 6" / 8" / 10" / 12" / 14" / 16" | OEM / ODM | Supported |
| Diameter Range | Ø3 mm – Ø17 mm |
| Size(L) | Diameter(ΦD) | |
|---|---|---|
| Inch | mm | mm |
| 4" | 100 | 3.1 |
| 6" | 150 | 5.1 |
| 8" | 200 | 6.5 |
| 10" | 250 | 8.5 |
| 12" | 300 | 10.5 |
| 14" | 350 | 13.3 |
| 16" | 400 | 17.3 |
| Size(L) | Diameter(ΦD) | |
|---|---|---|
| Inch | mm | mm |
| 4" | 100 | 3.8 |
| 6" | 150 | 5.8 |
| 8" | 200 | 7.3 |
| 10" | 250 | 9.3 |
| 12" | 300 | 11.8 |
| 14" | 350 | 14.8 |
Key Features
- Round section for internal curves
- Even tooth spacing
- Controlled contact inside circular openings
- Suitable for rough and fine filing
Applications
- Enlarging drilled holes
- Shaping internal curves and radii
- Cleaning pipe ends and round slots
- Machinery and tool repair