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Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3/16 Pilot Diameter - 82° Inclusive Angle
| Pilot Diameter | 3/16 |
| Inclusive Angle | 82 |
| Body Diameter | 0.405 |
| Shank Diameter | 1.3/4 |
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Description
The Robet Charles Imperial Piloted Countersink is a precision tool designed for repeatable countersinking in high-accuracy machining. Its integral pilot and 3-flute design ensure accurate hole alignment, smooth cutting action, and reduced chatter across aerospace, automotive, and general engineering applications.
- 3‑Flute Cutting Design for Smooth, Clean Countersinks: The three flutes provide efficient cutting and better chip evacuation, delivering a cleaner chamfer with reduced vibration for consistent results across materials.
- Integral Pilot with Tight Tolerances: Built-in pilot diameter is held to −0.0005" to −0.0015", ensuring concentric countersinks and repeatable hole alignment without the need for a separate pilot.
- 82° Inclusive Angle with 3/16" Integral Pilot and Straight Shank: Delivers a precise chamfer profile and compatibility with standard tooling setups for reliable engagement and rigidity in challenging setups.
Together, these features help you complete countersinking tasks with greater speed and confidence. The integrated pilot and tight tolerances minimize misalignment and chatter, delivering consistent holes and clean chamfers that improve surface finish. With a rigid straight shank and standard 82° geometry, you can rely on predictable performance across aerospace, automotive, and general engineering projects, reducing downtime and helping keep production on schedule.
Part Numbers
- Protool Part Number
- 5855-3/16-82
- 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.
