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Carmex Carbide Threading Insert - NPTF - TiAlN Coated - 12-18NPTF
| Application | Threading |
| Thread Form | NPTF |
| Internal or External | Internal & External |
| Insert Size | 12 |
| Pitch | 18 |
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The Carmex Carbide Threading Insert for NPTF with TiAlN coating is a versatile, high-precision tool designed for professional machinists who need reliable thread formation across a wide range of profiles.
- Thread profiles covered: A comprehensive collection that spans all common thread profiles, streamlining tooling in one insert family.
- Length options: Five lengths from 12 mm up to 40 mm to suit different depths, reach, and rigidity needs.
- Pitch range: Depending on the chosen length, supports pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI).
- Double-edged design: Inserts are double-sided with two cutting edges for extended life (note: BSPT/NPT/NPTF, American Buttress, API RD profiles may not utilize both edges).
- Internal/external capability: For many profiles, the same insert can machine both internal and external threads, reducing tool swaps (exceptions include ISO/UN/NPSM/UNJ/Acme).
- Coating: TiAlN coating enhances wear resistance and performance at higher temperatures, helping maintain precision over longer cutting cycles.
- Material: Solid carbide construction delivers rigidity and consistent thread economics across demanding materials.
- NPTF compatibility: Specifically engineered to deliver accurate NPTF thread formation with reliable threading performance.
This insert set is designed to deliver repeatable, accurate threads with fewer tool changes and longer edge life. The TiAlN coating reduces wear in high-temperature cutting, while the broad length and pitch options give you the flexibility to tackle deep pockets, tight tolerances, and a variety of material hardness. Whether you’re building precise fasteners, repairing components, or setting up high-mix production, this insert helps you maintain quality and efficiency with each pass.
| Application | Threading |
| Thread Form | NPTF |
| Internal or External | Internal & External |
| Insert Size | 12 |
| Pitch | 18 |
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 - NPTF - TiAlN Coated
View full collection →You are viewing 12-18NPTF. Click any other SKU to view its full details.
| Product SKU | Insert Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| 12-18NPTF Viewing | 12 | 18 | £29.10 | In Stock | |
| 14-14NPTF | 14 | 14 | £29.10 | 5 days | |
| 14-18NPTF | 14 | 18 | £29.10 | In Stock | |
| 21-11.5NPTF | 21 | 11.5 | £38.88 | In Stock | |
| 21-14NPTF | 21 | 14 | £38.88 | In Stock | |
| 30-11.5NPTF | 30 | 11.5 | £53.38 | 5 days | |
| 30-8NPTF | 30 | 8 | £53.38 | 5 days | |
| 40-11.5NPTF | 40 | 11.5 | £91.88 | 5 days | |
| 40-8NPTF | 40 | 8 | £91.88 | 5 days |
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