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Carmex Carbide Threading Insert - Unified - TiAlN Coated - 40I4.5UN
| Application | Threading |
| Thread Form | UN |
| Internal or External | Internal |
| Insert Size | 40 |
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The Carmex Carbide Threading Insert – Unified with TiAlN coating delivers versatile, precision threading for a wide range of common profiles. Designed for machinists and shops that need a reliable, single solution for both internal and external threads.
- Coating: TiAlN-coated carbide for improved wear resistance and sustained cutting performance in demanding threading operations.
- Material: Solid carbide insert offering rigidity, stability, and consistent thread accuracy across profiles.
- Thread profiles covered: Unified inserts that span all common thread profiles, simplifying tool selection for most jobs (with noted exceptions).
- Length options: Five lengths available, from 12 mm to 40 mm, to fit various machines and applications.
- Cutting edges: Double-sided design with two cutting edges, extending insert life (exceptions apply for BSPT/NPT/NPTF/American Buttress/API RD).
- Internal/External capability: Many profiles can be machined with the same insert for both internal and external threads, reducing setup time (ISO/UN/NPSM/UNJ/Acme have specific considerations).
- Pitch range: Depending on length, supports pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI), accommodating a wide range of thread standards.
With the TiAlN-coated Carmex Unified threading inserts, you gain reliable performance across diverse thread requirements, fewer tool changes, and predictable results. The double-edged design lets you maximize uptime by flipping to a fresh edge, while the five length options let you tailor the insert to your machine clearance and the specific thread you’re producing—from fine 0.5 mm pitches to coarse 6.0 mm threads. This makes the insert an excellent choice for professional workshops, production environments, and any operation that prioritizes consistent thread quality and efficiency.
Part Numbers
- Protool Part Number
- 40I4.5UN
- Brand
- Carmex
- Category
- Thread Mill
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: Carmex Carbide Threading Inserts - Unified - TiAlN Coated
View full collection →You are viewing 40I4.5UN. Click any other SKU to view its full details.
| Product SKU | Insert Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| 12I16UN | 12 | 16 | £29.81 | In Stock | |
| 12I18UN | 12 | 18 | £29.81 | 5 days | |
| 12I20UN | 12 | 20 | £29.81 | In Stock | |
| 12I24UN | 12 | 24 | £29.81 | In Stock | |
| 12I28UN | 12 | 28 | £29.81 | In Stock | |
| 12I32UN | 12 | 32 | £29.81 | In Stock | |
| 14E10UN | 14 | 10 | £22.91 | 5 days | |
| 14E11UN | 14 | 11 | £22.91 | 5 days | |
| 14E12UN | 14 | 12 | £29.81 | In Stock | |
| 14E14UN | 14 | 14 | £29.81 | In Stock | |
| 14E16UN | 14 | 16 | £29.81 | In Stock | |
| 14E18UN | 14 | 18 | £29.81 | 5 days | |
| 14E20UN | 14 | 20 | £29.81 | In Stock | |
| 14E24UN | 14 | 24 | £29.81 | In Stock | |
| 14E28UN | 14 | 28 | £29.81 | In Stock | |
| 14E32UN | 14 | 32 | £29.81 | 5 days | |
| 14I10UN | 14 | 10 | £29.81 | In Stock | |
| 14I11UN | 14 | 11 | £29.81 | In Stock | |
| 14I12UN | 14 | 12 | £29.81 | In Stock | |
| 14I14UN | 14 | 14 | £29.81 | 5 days | |
| 14I16UN | 14 | 16 | £29.81 | In Stock | |
| 14I18UN | 14 | 18 | £29.81 | In Stock | |
| 14I20UN | 14 | 20 | £29.81 | In Stock | |
| 14I24UN | 14 | 24 | £29.81 | In Stock | |
| 14I27UN | 14 | 27 | £29.81 | In Stock | |
| 14I28UN | 14 | 28 | £29.81 | In Stock | |
| 14I32UN | 14 | 32 | £29.81 | In Stock | |
| 14I9UN | 14 | 9 | £29.81 | In Stock | |
| 21E10UN | 21 | 10 | £39.62 | 5 days | |
| 21E11UN | 21 | 11 | £30.44 | 5 days | |
| 21E12UN | 21 | 12 | £39.62 | 5 days | |
| 21E14UN | 21 | 14 | £39.62 | 5 days | |
| 21E16UN | 21 | 16 | £39.62 | In Stock | |
| 21E18UN | 21 | 18 | £39.62 | In Stock | |
| 21E20UN | 21 | 20 | £39.62 | In Stock | |
| 21E24UN | 21 | 24 | £39.62 | In Stock | |
| 21I10UN | 21 | 10 | £39.62 | In Stock | |
| 21I12UN | 21 | 12 | £39.62 | 5 days | |
| 21I14UN | 21 | 14 | £39.62 | In Stock | |
| 21I16UN | 21 | 16 | £39.62 | In Stock | |
| 21I18UN | 21 | 18 | £39.62 | In Stock | |
| 21I20UN | 21 | 20 | £39.62 | In Stock | |
| 21I24UN | 21 | 24 | £39.62 | In Stock | |
| 21I7UN | 21 | 7 | £39.62 | In Stock | |
| 21I8UN | 21 | 8 | £39.62 | In Stock | |
| 30E10UN | 30 | 10 | £54.34 | 5 days | |
| 30E12UN | 30 | 12 | £54.34 | 5 days | |
| 30E14UN | 30 | 14 | £54.34 | 5 days | |
| 30E16UN | 30 | 16 | £54.34 | 5 days | |
| 30E18UN | 30 | 18 | £54.34 | 5 days | |
| 30E20UN | 30 | 20 | £54.34 | 5 days | |
| 30E6UN | 30 | 6 | £54.34 | 5 days | |
| 30E8UN | 30 | 8 | £54.34 | 5 days | |
| 30I10UN | 30 | 10 | £54.34 | 5 days | |
| 30I12UN | 30 | 12 | £54.34 | In Stock | |
| 30I14UN | 30 | 14 | £54.34 | 5 days | |
| 30I16UN | 30 | 16 | £54.34 | 5 days | |
| 30I18UN | 30 | 18 | £54.34 | In Stock | |
| 30I20UN | 30 | 20 | £54.34 | 5 days | |
| 30I5UN | 30 | 5 | £54.34 | In Stock | |
| 30I6UN | 30 | 6 | £54.34 | 5 days | |
| 30I8UN | 30 | 8 | £54.34 | 5 days | |
| 40E10UN | 40 | 10 | £93.98 | 5 days | |
| 40E12UN | 40 | 12 | £93.98 | 5 days | |
| 40E14UN | 40 | 14 | £93.98 | 5 days | |
| 40E16UN | 40 | 16 | £93.98 | 5 days | |
| 40E6UN | 40 | 6 | £93.98 | 5 days | |
| 40E8UN | 40 | 8 | £93.98 | 5 days | |
| 40I10UN | 40 | 10 | £93.98 | 5 days | |
| 40I12UN | 40 | 12 | £93.98 | 5 days | |
| 40I14UN | 40 | 14 | £93.98 | 5 days | |
| 40I16UN | 40 | 16 | £93.98 | 5 days | |
| 40I4.5UN Viewing | 40 | 4.5 | £93.98 | 5 days | |
| 40I4UN | 40 | 4 | £93.98 | 5 days | |
| 40I6UN | 40 | 6 | £93.98 | 5 days | |
| 40I8UN | 40 | 8 | £93.98 | 5 days |
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