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Toolex HSS-E Piloted Counterbore Metric 180° - M3.5
| Metric Size | M3.5 |
| Cutter Diameter | 6.5 |
| Pilot Diameter | 3.7 |
| Overall Length | 71 |
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Description
The Toolex HSS-E Piloted Counterbore Metric 180° - M3.5 is a precision cutting tool designed to create clean, flat-bottom counterbores for flush-fastener seating. Built for machinists, fabricators, and serious hobbyists, it combines a cobalt-enhanced HSS core with a guided piloted design for repeatable accuracy.
- Material: HSS-E (high-speed steel with cobalt) for superior strength, wear resistance, and heat tolerance under demanding cutting conditions.
- Edge geometry: 180° cutting edge yields a true flat-bottom counterbore for consistent recess depth.
- Piloted design: includes a precision pilot to align with the hole and stabilize cutting throughout the operation.
- Size: Metric M3.5 counterbore compatible with standard drilling setups and fastener sizes.
- Application: suitable for a range of materials, delivering clean, accurate recesses for flush seating of screws and bolts.
With its robust HSS-E construction and piloted guidance, this counterbore minimizes runout and chatter, reducing rework and improving the final appearance of your assemblies. The 180° flat bottom creates uniform recess depth across holes, ensuring consistent screw head seating and improved joint strength. Ideal for fabrication projects, fixture work, and repeatable production where precision matters and tool life is a priority.
Part Numbers
- Protool Part Number
- L0031035AM
- Brand
- Toolex
- Category
- Counterbore
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: Toolex HSS-E Piloted Counterbore 180°
View full collection →You are viewing L0031035AM. Click any other SKU to view its full details.
| Product SKU | Metric Size | Cutter Diameter | Pilot Diameter | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| L0031010AM | M1 | 2.2 | 1.1 | 45 | 2.2 | £22.48 | In Stock | |
| L0031012AM | M1.2 | 2.5 | 1.3 | 45 | 2.5 | £22.48 | In Stock | |
| L0031014AM | M1.4 | 2.8 | 1.5 | 45 | 2.8 | £20.99 | In Stock | |
| L0031016AM | M1.6 | 3.3 | 1.7 | 56 | 3.3 | £20.99 | In Stock | |
| L0031017AM | M1.7 | 3.8 | 1.8 | 56 | 3.8 | £20.99 | In Stock | |
| L0031020AM | M2 | 4.3 | 2.2 | 56 | 4.3 | £20.99 | In Stock | |
| L0031025AM | M2.5 | 5 | 2.7 | 56 | 5 | £22.23 | In Stock | |
| L0031026AM | M2.6 | 5.5 | 2.8 | 71 | 5.5 | £22.23 | In Stock | |
| L0031030AM | M3 | 6 | 3.2 | 71 | 6 | £22.86 | In Stock | |
| L0031035AM Viewing | M3.5 | 6.5 | 3.7 | 71 | 6.5 | £22.86 | In Stock | |
| L0031040AM | M4 | 8 | 4.3 | 71 | 8 | £23.10 | In Stock | |
| L0031050AM | M5 | 10 | 5.3 | 80 | 10 | £26.25 | In Stock | |
| L0031060AM | M6 | 11 | 6.4 | 80 | 11 | £29.11 | In Stock | |
| L0031080AM | M8 | 15 | 8.4 | 100 | 12.5 | £38.40 | In Stock | |
| L0031100AM | M10 | 18 | 10.5 | 100 | 12.5 | £49.80 | In Stock | |
| L0031120AM | M12 | 20 | 13 | 100 | 12.5 | £67.32 | In Stock |
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