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Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3/32 Pilot Diameter - 90° Inclusive Angle
| Pilot Diameter | 3/32 |
| Inclusive Angle | 90 |
| Body Diameter | 0.17 |
| Shank Diameter | 1.3/4 |
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Description
The Robet Charles Imperial Piloted Countersink is a precision cutting tool designed for repeatable, accurately aligned countersinks in metalworking. With a 90° inclusive angle, a 3-flute cutting design, and an integral pilot, it keeps holes centered and delivers smooth cutting with minimal chatter, making it ideal for aerospace, automotive, and general engineering tasks.
- Integral Pilot for Precise Alignment: The built-in pilot centers the countersink in the bore, delivering true, concentric countersinks and reducing drift during cutting for reliable repeatability across parts and setups.
- Three-Flute Design for Smooth Cutting: The balanced 3-flute geometry enhances material removal, improves edge quality, and minimizes chatter, even in tougher materials, for cleaner finishes and faster cycles.
- Tight Pilot Diameter Tolerance (3/32"): Pilot diameter is held to −0.0005" to −0.0015", ensuring consistent centering and dependable performance across production runs.
This piloted countersink helps you achieve consistently precise countersinks, reducing rework and streamlining assembly. Coupled with strict manufacturing tolerances, it supports predictable results, improved part quality, and greater confidence in every machining operation—whether you’re working on high-precision components or everyday engineering projects.
Part Numbers
- Protool Part Number
- 5855-3/32-90
- 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.
