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Robert Charles DIN 3 Flute Countersink 90° - 31.0mm Head Diameter

Robert Charles DIN 3 Flute Countersink 90° - 31.0mm Head Diameter

SKU:335C-31.0-90

The Robert Charles DIN 3 Flute Countersink 90° is a precision cutting tool designed to create clean, accurate 90° countersinks and chamfers with a superior surface finish. Built to DIN standard... Read more ↓
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M
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Head Diameter31.0
Small Diameter4.2
Shank Diameter12
Overall Length71
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£86.11
Prices shown ex. VAT
2–3 days estimated lead time — subject to availability
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01732 887334
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Description

The Robert Charles DIN 3 Flute Countersink 90° is a precision cutting tool designed to create clean, accurate 90° countersinks and chamfers with a superior surface finish.

Built to DIN standards and featuring a 31.0 mm head diameter, this countersink delivers reliable, repeatable results across steels, aluminium, and plastics. Its 3-flute design keeps cutting smooth and stable, minimizing vibration and improving chip evacuation, making it well-suited for engineering, maintenance, and production environments where precision matters.

  • DIN-standard precision: Delivers exact 90° countersink geometry and a clean chamfer finish in a single pass, supporting consistent results across production runs.
  • 3-flute stability and chip evacuation: Three cutting edges provide smooth, stable cuts with reduced vibration and efficient chip removal for cleaner finishes and longer tool life.
  • Versatile material compatibility: Effective on steels, aluminium, and plastics, making it a flexible choice for a wide range of applications from prototyping to everyday production.

With this countersink in your toolkit, you’ll achieve consistent 90° chamfers and clean surface finishes across a variety of materials, reducing rework and speeding setup times. The DIN-standard geometry and 3-flute design deliver dependable performance, smoothing workflow from engineering through production. It’s a versatile, reliable choice for shops that demand repeatable results when reliability matters most.

Part Numbers

Protool Part Number
335C-31.0-90
Brand
Robert Charles
Category
Countersinks
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Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
Delivery

Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.

Returns

14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.

Technical Support

Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Trade Accounts

Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.

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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Robert Charles DIN 3 Flute CountersinkS 90°

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You are viewing 335C-31.0-90. 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 6.31.5545590£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 Viewing31.04.212711890£86.11 2-3 days

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