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Description
Technical data for the Ø20.5 mm 90° countersink
| Technical data | |
|---|---|
| Cutting edge angle | 90 degrees |
| Maximum bore diameter D | fi 20.5 mm |
| Minimum bore diameter D1 | 3.5 mm |
| Diameter of the shank part d | 10 mm |
| total length L | 63 mm |
| Flute length l | 15 mm |
| Number of cutting edges Z | 3 |
| Tool material | HSSE high-speed steel |
Cutting data for the Ø20.5 mm 90° countersink
| Material | Vc [m/min] | Feed per tooth fz [mm/tooth] | n [rpm] | Total feed rate f [mm/min] |
|---|---|---|---|---|
| PSteel | 22 | 0.075 | 342 | 77 |
| MStainless steel | 12.5 | 0.037 | 194 | 22 |
| KCast iron | 10 | 0.05 | 155 | 23 |
| NAluminum | 62 | 0.15 | 963 | 433 |
Countersink Ø20.5mm 90° DIN 335 C HSSE is a precision tool designed for countersinking holes for countersunk screw heads and chamfering edges in a variety of metallic materials. With a design compliant with DIN 335 C and construction from cobalt-alloyed HSSE high-speed steel, the tool offers high resistance to wear and thermal loads.
Equipped with three symmetrical cutting edges, countersink Ø20.5 mm 90° ensures uniform cutting, reduced vibration, and high stability during operation. This feature provides repeatable results and a clean hole finish, which is particularly important in precision machining of technical components.
Use as a countersink for metal and as a tool for stainless steel, aluminum, bronze, or brass makes it exceptionally versatile. High-quality cutting surface reduces cutting resistance and ensures neat, smooth countersink edges.
- Three cutting edges – stabilize tool operation and improve finish quality.
- Precision tool geometry – enables fast, clean countersinking without burrs.
- Surface made from HSSE – increases abrasion resistance and contributes to longer life.
- Applications in a wide range of metals – including as a Ø20.5mm 90° countersink for stainless steel.
- Versatility – suitable for both one-off and series production.
Countersink Ø20.5 mm 90° is a reliable choice for professional machine shops where precision, durability, and machining quality matter for every component.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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