Please log in here to access all benefits, including promotional discounts and faster checkouts.
Robert Charles Piloted Microstop Countersink - Removable Pilot - Threaded Shank - 5/16 Pilot Dia - 5mm Pilot Shank Dia - 120°
| Pilot Diameter | 5/16 |
| Pilot Shank Diameter | 5 |
| Inclusive Angle | 120 |
| Cutter Diameter | 17.00 |
Learn more about Klarna
Description
The Robert Charles Piloted Microstop Countersink is a precision tooling solution designed for highly accurate, controlled countersinking where depth and repeatability matter. It features a 120° included angle and dedicated pilot sizes for versatile applications, including aerospace, engineering, and precision assembly. The pilot diameter is 5/16 inch, paired with a 5 mm pilot shank diameter for reliable alignment in demanding workflows.
With a removable pilot and a threaded shank, the tool offers easy pilot replacement and a secure, consistent fit into compatible microstop cages. This arrangement supports precise alignment, stable operation, and repeatable finishes across multiple hole sizes.
- Removable pilot for flexible hole sizing: Swap pilots quickly to match different hole sizes without retooling, preserving precise alignment and stable performance during countersinking.
- Threaded shank for secure microstop compatibility: Locks into compatible microstop cages for reliable, repeatable depth control and reduced setup adjustments.
- Durable construction for consistent finishes: Built for durability to deliver clean, uniform countersinks across a range of materials, reducing rework and downtime.
Whether you're tackling aerospace components, precision assemblies, or high-accuracy fabrication, this countersink helps you achieve precise, repeatable results, streamline setup, and improve overall throughput with confidence.
Part Numbers
- Protool Part Number
- D7.94-120-17
- 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 Countersink - Removable Pilot - Threaded Shank
View full collection →You are viewing D7.94-120-17. Click any other SKU to view its full details.
| Product SKU | Pilot Diameter | Pilot Shank Diameter | Inclusive Angle | Cutter Diameter | Number of Flutes | Thread | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| D2.38-90-10 | 3/32 | 2.3 | 90 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D3.17-90-10 | 1/8 | 2.5 | 90 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D3.96-90-10 | 5/32 | 3.5 | 90 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D4.76-90-10 | 3/16 | 3.5 | 90 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D4.76-90-14 | 3/16 | 4 | 90 | 14.00 | 2 | M8X1 | £59.25 | 2-3 days | |
| D6.35-90-14 | 1/4 | 4 | 90 | 14.00 | 2 | M8X1 | £59.25 | 2-3 days | |
| D7.94-90-17 | 5/16 | 5 | 90 | 17.00 | 3 | M8X1 | £74.26 | 2-3 days | |
| D9.52-90-21 | 3/8 | 5 | 90 | 21.00 | 3 | M8X1 | £79.00 | 2-3 days | |
| D2.38-100-10 | 3/32 | 2 | 100 | 10.00 | 2 | M6X1 | £39.50 | 2-3 days | |
| D3.17-100-10 | 1/8 | 2.5 | 100 | 10.00 | 2 | M6X1 | £39.50 | 2-3 days | |
| D3.96-100-10 | 5/32 | 3.5 | 100 | 10.00 | 2 | M6X1 | £39.50 | 2-3 days | |
| D4.76-100-10 | 3/16 | 3.5 | 100 | 10.00 | 2 | M6X1 | £39.50 | 2-3 days | |
| D4.76-100-14 | 3/16 | 4 | 100 | 14.00 | 2 | M8X1 | £50.56 | 2-3 days | |
| D6.35-100-14 | 1/4 | 4 | 100 | 14.00 | 2 | M8X1 | £50.56 | 2-3 days | |
| D7.94-100-17 | 5/16 | 5 | 100 | 17.00 | 3 | M8X1 | £66.36 | 2-3 days | |
| D9.52-100-21 | 3/8 | 5 | 100 | 21.00 | 3 | M8X1 | £72.68 | 2-3 days | |
| D2.38-120-10 | 3/32 | 2 | 120 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D3.17-120-10 | 1/8 | 2.5 | 120 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D3.96-120-10 | 5/32 | 3.5 | 120 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D4.76-120-10 | 3/16 | 3.5 | 120 | 10.00 | 2 | M6X1 | £47.40 | 2-3 days | |
| D4.76-120-14 | 3/16 | 4 | 120 | 14.00 | 2 | M8X1 | £58.46 | 2-3 days | |
| D6.35-120-14 | 1/4 | 4 | 120 | 14.00 | 2 | M8X1 | £58.46 | 2-3 days | |
| D7.94-120-17 Viewing | 5/16 | 5 | 120 | 17.00 | 3 | M8X1 | £74.26 | 2-3 days | |
| D9.52-120-21 | 3/8 | 5 | 120 | 21.00 | 3 | M8X1 | £79.00 | 2-3 days |
No products match your filters.
