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Robert Charles Metric Piloted Countersink - 3 Flutes - Integral Pilot - Straight Shank - 4.0mm Pilot Diameter - 100° Inclusive Angle
| Pilot Diameter | 4.0 |
| Inclusive Angle | 100 |
| Body Diameter | 8.96 |
| Shank Diameter | 1.3/4 |
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Description
The Robert Charles Metric Piloted Countersink – 3 Flutes – Integral Pilot – Straight Shank is built for precise countersinking of metric pre-drilled holes. The integral pilot keeps the tool aligned with the hole, preventing wander and delivering clean, concentric bevels with minimal chatter. Designed for reliable, repeatable performance, it’s a practical choice for workshops, maintenance, and production machining.
Its 3-flute cutting geometry delivers smooth cutting, excellent stability, and efficient chip evacuation, making it well suited to a wide range of materials including steel, aluminum, and plastics.
- Integral Pilot for Precise Alignment: Keeps the countersink centered in the hole, reducing wander and rework while delivering consistent, concentric finishes.
- 3‑Flute Design for Smooth Cutting and Chip Evacuation: Provides stable cuts with minimal vibration and quick debris removal for clean, high‑quality countersinks across multiple materials.
- Metric Geometry: 4.0 mm Pilot Diameter, 100° Included Angle, Straight Shank: Predictable, shop‑friendly performance with broad machine compatibility for standard metric applications.
This countersink supports faster setup, reliable results, and a smoother workflow by ensuring accurate alignment, stable cutting, and easy integration into existing tooling. It helps you achieve flush finishes with less downtime and consistent quality across production runs.
Part Numbers
- Protool Part Number
- 5845-4.0-100
- 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 Metric Piloted Countersink - 3 Flutes - Integral Pilot - Straight Shank
View full collection →You are viewing 5845-4.0-100. Click any other SKU to view its full details.
| Product SKU | Pilot Diameter | Inclusive Angle | Body Diameter | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| 5845-2.5-90 | 2.5 | 90 | 4.76 | 1.3/4 | 2.5 | £26.86 | 2-3 days | |
| 5845-2.5-100 | 2.5 | 100 | 4.76 | 1.3/4 | 2.5 | £26.86 | 2-3 days | |
| 5845-2.5-120 | 2.5 | 120 | 4.76 | 1.3/4 | 2.5 | £26.86 | 2-3 days | |
| 5845-3.0-90 | 3.0 | 90 | 6.72 | 1.3/4 | 2.5 | £28.44 | 2-3 days | |
| 5845-3.0-100 | 3.0 | 100 | 6.72 | 1.3/4 | 2.5 | £28.44 | 2-3 days | |
| 5845-3.0-120 | 3.0 | 120 | 6.72 | 1.3/4 | 2.5 | £28.44 | 2-3 days | |
| 5845-3.5-90 | 3.5 | 90 | 8.6 | 1.3/4 | 2.5 | £30.02 | 2-3 days | |
| 5845-3.5-100 | 3.5 | 100 | 8.6 | 1.3/4 | 2.5 | £30.02 | 2-3 days | |
| 5845-3.5-120 | 3.5 | 120 | 8.6 | 1.3/4 | 2.5 | £30.02 | 2-3 days | |
| 5845-4.0-90 | 4.0 | 90 | 8.96 | 1.3/4 | 2.5 | £30.81 | 2-3 days | |
| 5845-4.0-100 Viewing | 4.0 | 100 | 8.96 | 1.3/4 | 2.5 | £30.81 | 2-3 days | |
| 5845-4.0-120 | 4.0 | 120 | 8.96 | 1.3/4 | 2.5 | £30.81 | 2-3 days | |
| 5845-5.0-90 | 5.0 | 90 | 11.2 | 1.3/4 | 2.5 | £36.34 | 2-3 days | |
| 5845-5.0-100 | 5.0 | 100 | 11.2 | 1.3/4 | 2.5 | £36.34 | 2-3 days | |
| 5845-5.0-120 | 5.0 | 120 | 11.2 | 1.3/4 | 2.5 | £36.34 | 2-3 days | |
| 5845-6.0-90 | 6.0 | 90 | 13.44 | 1.3/4 | 2.5 | £42.66 | 2-3 days | |
| 5845-6.0-100 | 6.0 | 100 | 13.44 | 1.3/4 | 2.5 | £42.66 | 2-3 days | |
| 5845-6.0-120 | 6.0 | 120 | 13.44 | 1.3/4 | 2.5 | £42.66 | 2-3 days | |
| 5845-8.0-90 | 8.0 | 90 | 17.92 | 1.3/4 | 3.12 | £60.04 | 2-3 days | |
| 5845-8.0-100 | 8.0 | 100 | 17.92 | 1.3/4 | 3.12 | £60.04 | 2-3 days | |
| 5845-8.0-120 | 8.0 | 120 | 17.92 | 1.3/4 | 3.12 | £60.04 | 2-3 days | |
| 5845-10-90 | 10.0 | 30 | 22.4 | 1.3/4 | 3.12 | £82.16 | 2-3 days | |
| 5845-10.0-100 | 10.0 | 100 | 22.4 | 1.3/4 | 3.12 | £82.16 | 2-3 days | |
| 5845-10.0-120 | 10.0 | 120 | 22.4 | 1.3/4 | 3.12 | £82.16 | 2-3 days | |
| 5845-12.0-90 | 12.0 | 90 | 26.88 | 1.3/4 | 3.12 | £100.33 | 2-3 days | |
| 5845-12.0-100 | 12.0 | 100 | 26.88 | 1.3/4 | 3.12 | £100.33 | 2-3 days | |
| 5845-12.0-120 | 12 | 120 | 26.88 | 1.3/4 | 3.12 | £100.33 | 2-3 days |
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