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Robert Charles Imperial 3 Flute Countersink 120° - 1/4 Head Diameter
| Head Diameter | 1/4 |
| Small Diameter | 3/32 |
| Shank Diameter | 3/16 |
| Overall Length | 1.5/8 |
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Description
The Robert Charles Imperial 3 Flute Countersink is a precision cutting tool designed to countersink imperial-sized holes with accuracy and efficiency. Featuring a 120° cutting angle and a 1/4" head diameter, this countersink delivers clean, consistent chamfers that help parts assemble smoothly and meet tight tolerances.
Engineered for versatility, it performs reliably across steel, aluminium, and plastics, making it a dependable choice for workshop, maintenance, and production machining tasks where surface finish and dimensional accuracy matter.
- 120° chamfer geometry for imperial holes: Delivers precise, consistent chamfers that match standard imperial tolerances, reducing deburring and rework.
- Three-flute design for smooth, stable cuts: Minimizes chatter and vibration, producing a cleaner finish and longer tool life across a range of materials.
- Durable construction for reliable performance: Built to withstand daily use in workshop environments, delivering consistent results and less downtime.
With the Robert Charles Imperial countersink, you gain consistent, high-quality chamfers that improve fit and finish, speed up assembly, and reduce tool changes in busy workflows. Its reliable performance across steel, aluminium, and plastics helps you standardize processes and achieve professional results—time after time.
Part Numbers
- Protool Part Number
- 5858-1/4-120
- 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 Imperial 3 Flute Countersinks
View full collection →You are viewing 5858-1/4-120. Click any other SKU to view its full details.
| Product SKU | Head Diameter | Small Diameter | Shank Diameter | Overall Length | Inclusive Angle | Shank Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 5858-1/4-60 | 1/4 | 3/32 | 3/16 | 1.3/4 | 60 | 1.1/4 | £20.54 | 2-3 days | |
| 5858-3/8-60 | 3/8 | 1/8 | 1/4 | 1.3/4 | 60 | 1.1/4 | £23.70 | 2-3 days | |
| 5858-1/2-60 | 1/2 | 1/8 | 3/8 | 1.7/8 | 60 | 1.1/4 | £26.86 | 2-3 days | |
| 5858-5/8-60 | 5/8 | 5/32 | 1/2 | 2 | 60 | 1.1/4 | £37.92 | 2-3 days | |
| 5858-3/4-60 | 3/4 | 5/32 | 1/2 | 2.1/2 | 60 | 1.1/2 | £54.51 | 2-3 days | |
| 5858-1-60 | 1.00 | 3/16 | 1/2 | 2.3/4 | 60 | 1.1/2 | £71.89 | 2-3 days | |
| 5858-1.1/4-60 | 1.1/4 | 1/4 | 1/2 | 3 | 60 | 1.1/2 | £108.23 | 2-3 days | |
| 5858-1/4-82 | 1/4 | 3/32 | 3/16 | 1.3/4 | 82 | 1.1/4 | £29.23 | 2-3 days | |
| 5858-3/8-82 | 3/8 | 1/8 | 1/4 | 1.3/4 | 82 | 1.1/4 | £34.76 | 2-3 days | |
| 5858-1/2-82 | 1/2 | 1/8 | 3/8 | 1.7/8 | 82 | 1.1/4 | £37.92 | 2-3 days | |
| 5858-5/8-82 | 5/8 | 5/32 | 1/2 | 2 | 82 | 1.1/4 | £51.35 | 2-3 days | |
| 5858-3/4-82 | 3/4 | 5/32 | 1/2 | 2.1/2 | 82 | 1.1/2 | £70.31 | 2-3 days | |
| 5858-1-82 | 1.00 | 3/16 | 1/2 | 2.3/4 | 82 | 1.1/2 | £88.48 | 2-3 days | |
| 5858-1.1/4-82 | 1.1/4 | 1/4 | 1/2 | 3 | 82 | 1.1/2 | £151.68 | 2-3 days | |
| 5858-1/4-90 | 1/4 | 3/32 | 3/16 | 1.3/4 | 90 | 1.1/4 | £18.96 | 2-3 days | |
| 5858-3/8-90 | 3/8 | 1/8 | 1/4 | 1.3/4 | 90 | 1.1/4 | £22.12 | 2-3 days | |
| 5858-1/2-90 | 1/2 | 1/8 | 3/8 | 1.7/8 | 90 | 1.1/4 | £23.70 | 2-3 days | |
| 5858-5/8-90 | 5/8 | 5/32 | 1/2 | 2 | 90 | 1.1/4 | £31.60 | 2-3 days | |
| 5858-3/4-90 | 3/4 | 5/32 | 1/2 | 2.1/2 | 90 | 1.1/2 | £45.82 | 2-3 days | |
| 5858-1-90 | 1.00 | 3/16 | 1/2 | 2.3/4 | 90 | 1.1/2 | £63.20 | 2-3 days | |
| 5858-1.1/4-90 | 1.1/4 | 1/4 | 1/2 | 3 | 90 | 1.1/2 | £109.02 | 2-3 days | |
| 5858-1/4-100 | 1/4 | 3/32 | 3/16 | 1.5/8 | 100 | 1.1/2 | £29.23 | 2-3 days | |
| 5858-3/8-100 | 3/8 | 1/8 | 1/4 | 1.5/8 | 100 | 1.1/4 | £33.97 | 2-3 days | |
| 5858-1/2-100 | 1/2 | 1/8 | 3/8 | 1.5/8 | 100 | 1.1/4 | £37.92 | 2-3 days | |
| 5858-5/8-100 | 5/8 | 5/32 | 1/2 | 1.7/8 | 100 | 1.1/4 | £50.56 | 2-3 days | |
| 5858-3/4-100 | 3/4 | 5/32 | 1/2 | 2.1/8 | 100 | 1.1/2 | £69.52 | 2-3 days | |
| 5858-1-100 | 1.00 | 3/16 | 1/2 | 2.1/2 | 100 | 1.1/2 | £88.48 | 2-3 days | |
| 5858-1.1/4-100 | 1.1/4 | 1/4 | 1/2 | 2.3/4 | 100 | 1.1/2 | £151.68 | 2-3 days | |
| 5858-1/4-120 Viewing | 1/4 | 3/32 | 3/16 | 1.5/8 | 120 | 1.1/4 | £39.50 | 2-3 days | |
| 5858-3/8-120 | 3/8 | 1/8 | 1/4 | 1.5/8 | 120 | 1.1/4 | £42.66 | 2-3 days | |
| 5858-1/2-120 | 1/2 | 1/8 | 3/8 | 1.5/8 | 120 | 1.1/4 | £50.56 | 2-3 days | |
| 5858-5/8-120 | 5/8 | 5/32 | 1/2 | 1.7/8 | 120 | 1.1/4 | £61.62 | 2-3 days | |
| 5858-3/4-120 | 3/4 | 5/32 | 1/2 | 2.1/8 | 120 | 1.1/2 | £78.21 | 2-3 days | |
| 5858-1-120 | 1.00 | 3/16 | 1/2 | 2.1/2 | 120 | 1.1/2 | £102.70 | 2-3 days | |
| 5858-1.1/4-120 | 1.1/4 | 1/4 | 1/2 | 2.3/4 | 120 | 1.1/2 | £172.22 | 2-3 days |
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