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Robert Charles DIN 3 Flute Countersink 90° - 4.3mm Head Diameter
| Head Diameter | 4.3 |
| Small Diameter | 1.2 |
| Shank Diameter | 4 |
| Overall Length | 40 |
| Head Length | 3.5 |
| Angle | 90 |
Learn more about Klarna
The Robert Charles DIN 3 Flute Countersink 90° is a precision cutting tool designed to create accurate 90° countersinks and chamfers. Manufactured to DIN standards, it delivers a clean, consistent surface finish for engineers, machinists, and maintenance teams seeking reliable, repeatable results. With a 4.3 mm head diameter, this countersink offers precise control for a wide range of applications.
The 3‑flute cutting design ensures smooth, stable cutting with reduced vibration and improved chip evacuation, helping to deliver accurate and consistent results across steels, aluminium, and plastics. This makes it an ideal choice for engineering, maintenance, and production environments where reliability and precision matter.
- DIN-standard precision for consistent results: Manufactured to DIN standards to deliver accurate 90° countersinks and chamfers with predictable sizing and finish, reducing guesswork and rework.
- Three-flute design for smooth cutting and efficient chip evacuation: The 3‑flute geometry provides smoother, more stable cuts with reduced vibration and improved chip evacuation for a cleaner finish and fewer interruptions.
- Wide material compatibility: Suitable for steels, aluminium, and plastics, enabling reliable performance across engineering, maintenance, and production tasks without frequent tool changes.
In practice, this countersink helps you complete projects faster with consistent results, smoother chamfers, and less downtime. Built to withstand regular use in demanding environments, it supports a reliable workflow from setup to finish.
| Head Diameter | 4.3 |
| Small Diameter | 1.2 |
| Shank Diameter | 4 |
| Overall Length | 40 |
| Head Length | 3.5 |
| Angle | 90 |
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: Robert Charles DIN 3 Flute CountersinkS 90°
View full collection →You are viewing 335C-4.3-90. Click any other SKU to view its full details.
| Product SKU | Head Diameter | Small Diameter | Shank Diameter | Overall Length | Head Length | Angle | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 335C-4.3-90 Viewing | 4.3 | 1.2 | 4 | 40 | 3.5 | 90 | £18.96 | 2-3 days | |
| 335C-5.3-90 | 5.3 | 1.5 | 4 | 40 | 4 | 90 | £19.75 | 2-3 days | |
| 335C-6.3-90 | 6.3 | 1.5 | 5 | 45 | 5 | 90 | £20.54 | 2-3 days | |
| 335C8.3-90 | 8.3 | 2 | 6 | 50 | 6 | 90 | £21.33 | 2-3 days | |
| 335C-10-0-90 | 10.0 | 2.5 | 6 | 50 | 7.1 | 90 | £22.12 | 2-3 days | |
| 335C-10.4-90 | 10.4 | 2.5 | 6 | 50 | 7.1 | 90 | £22.12 | 2-3 days | |
| 335C-11.5-90 | 11.5 | 2.8 | 8 | 56 | 7.5 | 90 | £23.70 | 2-3 days | |
| 335C-12.4-90 | 12.4 | 2.8 | 8 | 56 | 8 | 90 | £24.49 | 2-3 days | |
| 335C-15.0-90 | 15.0 | 3.2 | 10 | 60 | 9 | 90 | £32.39 | 2-3 days | |
| 335C-16.5-90 | 16.5 | 3.2 | 10 | 60 | 10 | 90 | £33.18 | 2-3 days | |
| 335C-19.0-90 | 19.0 | 3.5 | 10 | 63 | 11.2 | 90 | £41.87 | 2-3 days | |
| 335C-20.5-90 | 20.5 | 3.5 | 10 | 63 | 12.5 | 90 | £46.61 | 2-3 days | |
| 335C-23.0-90 | 23.0 | 3.8 | 10 | 67 | 13.2 | 90 | £60.04 | 2-3 days | |
| 335C-25.0-90 | 25.0 | 3.8 | 10 | 67 | 15 | 90 | £61.62 | 2-3 days | |
| 335C-26.0-90 | 26.0 | 3.8 | 10 | 67 | 15 | 90 | £67.94 | 2-3 days | |
| 335C-28.0-90 | 28.0 | 4 | 12 | 71 | 16 | 90 | £83.74 | 2-3 days | |
| 335C-30.0-90 | 30.0 | 4.2 | 12 | 71 | 18 | 90 | £86.11 | 2-3 days | |
| 335C-31.0-90 | 31.0 | 4.2 | 12 | 71 | 18 | 90 | £86.11 | 2-3 days |
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