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Robert Charles DIN 3 Flute Countersink 90° - 6.3mm Head Diameter

Robert Charles DIN 3 Flute Countersink 90° - 6.3mm Head Diameter

SKU:335C-6.3-90

The Robert Charles DIN 3 Flute Countersink 90° is a DIN-compliant cutting tool designed to create precise 90° countersinks and chamfers with a smooth surface finish. The 3-flute design delivers s... Read more ↓
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Head Diameter6.3
Small Diameter1.5
Shank Diameter5
Overall Length45
Head Length5
Angle90
£20.54
Prices shown ex. VAT
2–3 days estimated lead time — subject to availability
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The Robert Charles DIN 3 Flute Countersink 90° is a DIN-compliant cutting tool designed to create precise 90° countersinks and chamfers with a smooth surface finish. The 3-flute design delivers stable cutting with reduced vibration, helping you achieve consistent results across a wide range of materials.

With a 6.3 mm head diameter, this countersink is suitable for steels, aluminium, and plastics in engineering, maintenance, and production environments where reliability matters.

  • Smooth, stable cutting with reduced vibration: The 3-flute geometry concentrates cutting forces evenly, delivering a cleaner finish and minimizing chatter for accurate countersinks and chamfers in a single pass.
  • Efficient chip evacuation for cleaner cuts: Flute design promotes effective chip removal, reducing heat buildup and extending tool life in tough materials and long-running jobs.
  • DIN-compliant precision for repeatable results: Designed to DIN standards, it delivers consistent 90° angles and chamfer dimensions across metals and plastics, improving interchangeability and quality control.

Whether you’re assembling parts, refurbishing equipment, or performing routine maintenance, this countersink helps you prep holes quickly and accurately, reduces rework, and supports reliable production throughput. The combination of robust construction and standardized geometry provides confidence that you’ll achieve dependable results, batch after batch, with minimal tool changes and downtime.

Head Diameter 6.3
Small Diameter 1.5
Shank Diameter 5
Overall Length 45
Head Length 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.

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Staff are very helpful and interested in providing a good service making us the customer feel valued.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
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Full Range: Robert Charles DIN 3 Flute CountersinkS 90°

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You are viewing 335C-6.3-90. Click any other SKU to view its full details.

Product SKUHead DiameterSmall DiameterShank DiameterOverall LengthHead LengthAnglePriceStock Order
335C-4.3-90 4.31.24403.590£18.96 2-3 days
335C-5.3-90 5.31.5440490£19.75 2-3 days
335C-6.3-90 Viewing6.31.5545590£20.54 2-3 days
335C8.3-90 8.32650690£21.33 2-3 days
335C-10-0-90 10.02.56507.190£22.12 2-3 days
335C-10.4-90 10.42.56507.190£22.12 2-3 days
335C-11.5-90 11.52.88567.590£23.70 2-3 days
335C-12.4-90 12.42.8856890£24.49 2-3 days
335C-15.0-90 15.03.21060990£32.39 2-3 days
335C-16.5-90 16.53.210601090£33.18 2-3 days
335C-19.0-90 19.03.5106311.290£41.87 2-3 days
335C-20.5-90 20.53.5106312.590£46.61 2-3 days
335C-23.0-90 23.03.8106713.290£60.04 2-3 days
335C-25.0-90 25.03.810671590£61.62 2-3 days
335C-26.0-90 26.03.810671590£67.94 2-3 days
335C-28.0-90 28.0412711690£83.74 2-3 days
335C-30.0-90 30.04.212711890£86.11 2-3 days
335C-31.0-90 31.04.212711890£86.11 2-3 days

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