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Robert Charles Piloted Microstop Countersink - 3 Flute - Integral Pilot - Threaded Shank - 3/32 Pilot Diameter - 100°
| Pilot Diameter | 3/32 |
| Cutter Diameter | 1/2 |
| Inclusive Angle | 100 |
| Thread | 1/4-28 |
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Description
The Robert Charles Piloted Microstop Countersink is a precision 3-flute tooling solution with an integral pilot that centers perfectly for accurate hole alignment and consistent countersinking. Its threaded shank provides a secure fit and reliable depth control, and with a 3/32" pilot diameter and 100° countersink angle, it delivers repeatable, burr-free finishes. Designed to work with microstop cages, this countersink is ideal for high-accuracy aerospace, automotive, and precision engineering applications.
- Integrated Pilot for Accurate Alignment: Built-in pilot guides the tool for centered, repeatable countersinks, reducing misalignment and rework.
- Threaded Shank for Secure Fit and Depth Control: The threaded connection ensures a stable mount on microstop cages, delivering consistent countersink depth with every operation.
- Tight-Tolerance Pilot Diameter: Pilot diameter held to −0.0005" to −0.0015", enabling precise alignment and reliable, high-precision results across demanding assemblies.
This countersink is designed to streamline your workflow: expect faster setup, fewer rejects due to misalignment, and consistently clean countersinks that meet stringent quality standards. The combination of a precise 3-flute cut, integral pilot, and tight tolerances translates to improved part quality, reduced downtime, and dependable performance in high-precision machining environments.
Part Numbers
- Protool Part Number
- SUNF3/32-100-1/2
- 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 Piloted Microstop Countersinks - 3 Flute - Integral Pilot - Threaded Shank
View full collection →You are viewing SUNF3/32-100-1/2. Click any other SKU to view its full details.
| Product SKU | Pilot Diameter | Cutter Diameter | Inclusive Angle | Thread | Decimal Equivalent | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| SUNF3/32-100-1/2 Viewing | 3/32 | 1/2 | 100 | 1/4-28 | . 0938 | £33.18 | 2-3 days | |
| SUNF1/8-100-1/2 | 1/8 | 1/2 | 100 | 1/4-28 | . 1250 | £33.18 | 2-3 days | |
| SUNF5/32-100-1/2 | 5/32 | 1/2 | 100 | 1/4-28 | . 1563 | £33.18 | 2-3 days | |
| SUNF3/16-100-1/2 | 3/16 | 1/2 | 100 | 1/4-28 | . 1875 | £33.18 | 2-3 days | |
| SUNF7/32-100-1/2 | 7/32 | 1/2 | 100 | 1/4-28 | . 2188 | £33.18 | 2-3 days | |
| SUNF1/4-100-1/2 | 1/4 | 1/2 | 100 | 1/4-28 | . 2500 | £33.18 | 2-3 days |
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