Diager 504C 5-Piece HSS 90° Countersink Set (Conical Cutter)
HIGHLIGHTS: The Diager 504C 5-Piece HSS 90° Countersink Set (Conical Cutter) is a professional countersinking set designed for deburring, chamfering, and countersinking holes in metal, plastic, and wood. Manufactured from premium...

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HIGHLIGHTS:
The Diager 504C 5-Piece HSS 90° Countersink Set (Conical Cutter) is a professional countersinking set designed for deburring, chamfering, and countersinking holes in metal, plastic, and wood. Manufactured from premium high-speed steel (HSS), each countersink delivers clean, accurate finishes and extended cutting performance for workshop and industrial applications.
Featuring a 90° cutting angle, the conical cutters produce smooth countersinks for flush screw head installation while effectively removing burrs from drilled holes. The five commonly used sizes make this set suitable for a wide variety of fastening and finishing tasks.
Supplied in a convenient storage case, the Diager 504C Countersink Set is ideal for professional machinists, fabricators, maintenance technicians, and DIY users requiring precision finishing operations.
FEATURES:
- 5-piece HSS Countersink Set for professional finishing applications.
- 90° Conical Cutter Design produces clean and accurate countersinks.
- High-Speed Steel (HSS) construction offers durability and long service life.
- Suitable for deburring, chamfering, and preparing holes for countersunk screws.
- Supplied in a compact storage case for convenient organization.
BENEFITS:
- Produces Smooth Countersinks for flush screw installation.
- Efficient Burr Removal after drilling operations.
- Clean Surface Finish on a variety of materials.
- Multiple Sizes cover the most common workshop applications.
Suitable Materials:
- Steel
- Non-ferrous Metals
- Plastic
- Wood
| Model | Description |
| 504C | 5 pcs HSS 90° Countersinks: Ø8.3 mm, Ø10.4 mm, Ø12.4 mm, Ø16.5 mm, Ø20.5 mm |
| Brand | Diager |
| Model | 504C |
| Product Type | HSS 90° Countersink Set (Conical Cutter) |
| Material | High-Speed Steel (HSS) |
| Cutting Angle | 90° |
| Number of Pieces | 5 Pieces |
| Included Sizes | Ø8.3 mm, Ø10.4 mm, Ø12.4 mm, Ø16.5 mm, Ø20.5 mm |
| Applications | Countersinking, Chamfering, Deburring, Screw Head Recessing, Hole Finishing |
| Suitable Materials | Steel, Non-ferrous Metals, Plastic, Wood |
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