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Robert Charles Metric Piloted Countersink - 3 Flutes - Integral Pilot - Straight Shank - 3.5mm Pilot Diameter - 100° Inclusive Angle
| Pilot Diameter | 3.5 |
| Inclusive Angle | 100 |
| Body Diameter | 8.6 |
| Shank Diameter | 1.3/4 |
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Description
The Robert Charles Metric Piloted Countersink with 3 flutes, an integral pilot, and a straight shank is designed for precise, repeatable countersinking of metric pre-drilled holes. The integral pilot centers the cutter to prevent wanders, delivering clean, concentric countersinks every time. This tool is ideal for workshops, maintenance tasks, and production machining where accuracy and consistency matter.
- Integral Pilot for Precision Alignment: Centers the countersink in the pre-drilled hole, eliminating tool wander and ensuring true, concentric countersinks with every pass.
- Smooth Cutting with 3 Flutes and Efficient Chip Evacuation: Three cutting edges provide stable, smooth cutting and quick chip removal, reducing chatter and heat across a range of materials.
- Straight Shank and 3.5 mm Pilot Diameter for Versatile Use: Designed to fit standard setups with a 3.5 mm pilot and a 100° seating angle, offering reliable alignment and compatibility across steels, aluminium, and plastics.
This countersink helps you finish parts with consistent edge quality while streamlining setup and reducing rework. Its robust design and metric-specific geometry support reliable performance across common workshop and production environments, making it a dependable choice for precision countersinking tasks.
Part Numbers
- Protool Part Number
- 5845-3.5-100
- 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 5845-3.5-100. 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 Viewing | 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 | 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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