Please log in here to access all benefits, including promotional discounts and faster checkouts.
Robert Charles DIN 3 Flute Countersink 100° - 12.4mm Head Diameter
| Head Diameter | 12.4 |
| Small Diameter | 2.8 |
| Shank Diameter | 8 |
| Overall Length | 56 |
Learn more about Klarna
Description
The Robert Charles DIN 3 Flute Countersink 100° is a DIN-standard cutting tool designed for precise countersinking and chamfering. Its 3-flute geometry ensures smooth, stable cuts and efficient chip evacuation, delivering a clean, accurate finish on steel, aluminium, and plastics. Ideal for engineers, machinists, and workshop teams that require reliable fastener seating and high surface quality.
- DIN 100° precision geometry: Delivers consistent countersinking angles and flush seating, ensuring repeatable results across a variety of materials.
- Three-flute design for smooth cutting: Minimizes chatter and enhances chip removal for a cleaner finish and longer tool life.
- 12.4 mm head diameter for stable countersinking: Provides rigid guidance and reliable performance, reducing deflection in demanding applications.
Whether you're prototyping or working in daily production, this countersink helps you achieve fast, accurate seating and smooth edge quality, improving workflow and reducing finishing time. The combination of precise DIN geometry, efficient chip evacuation, and durable construction makes it a dependable choice for engineering workshops and manufacturing environments.
Part Numbers
- Protool Part Number
- 335C-12.4-100
- Brand
- Robert Charles
- Category
- Countersinks
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.
Full Range: Robert Charles DIN 3 Flute Countersinks 100°
View full collection →You are viewing 335C-12.4-100. 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-6.3-100 | 6.3 | 1.5 | 5 | 45 | 5 | 100 | £30.02 | 2-3 days | |
| 335C-8.3-100 | 8.3 | 2 | 6 | 50 | 6 | 100 | £31.60 | 2-3 days | |
| 335C10-4-100 | 10.4 | 2.5 | 6 | 50 | 7.1 | 100 | £34.76 | 2-3 days | |
| 335C-12.4-100 Viewing | 12.4 | 2.8 | 8 | 56 | 8 | 100 | £37.92 | 2-3 days | |
| 335C-16.5-100 | 16.5 | 3.2 | 10 | 60 | 10 | 100 | £50.56 | 2-3 days | |
| 335C-20.5-100 | 20.5 | 3.5 | 10 | 63 | 12.5 | 100 | £69.52 | 2-3 days | |
| 335C-25.0-100 | 25.0 | 3.8 | 10 | 67 | 15 | 100 | £88.48 | 2-3 days | |
| 335C-30-100 | 30.0 | 4.2 | 12 | 71 | 18 | 100 | £154.84 | 2-3 days | |
| 335C-31.0-100 | 31.0 | 4.2 | 12 | 71 | 18 | 100 | £154.84 | 2-3 days |
No products match your filters.
