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Carmex Carbide Threading Insert - NPSM - TiAlN Coated - 21E14NPSM
| Application | Threading |
| Thread Form | NSPM |
| Internal or External | External |
| Insert Size | 21 |
| Pitch | 14 |
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The Carmex Carbide Threading Insert for NPSM is a versatile, TiAlN-coated cutting solution designed for machinists who need reliable threading across a wide range of profiles. Built to withstand demanding machining conditions, this insert family simplifies setup and extends tool life in both internal and external threading tasks.
- Wide thread profile coverage: A comprehensive collection that spans all common thread profiles, reducing the need for multiple inserts.
- Five length options: Available in lengths from 12 mm to 40 mm to suit different machine setups and depth-of-cut requirements.
- Pitch range versatility: Depending on length, capable of threading pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI).
- Double-sided cutting edges: Each insert provides two cutting edges for extended life (except for BSPT/NPT/NPTF/American Buttress/API RD standards).
- Internal and external threading compatibility: For many profiles, the same insert can machine both internal and external threads (excluding ISO, UN, NPSM, UNJ, and Acme).
- TiAlN-coated carbide: Coating enhances wear resistance and enables longer use in tougher materials and higher-speed applications.
- Precise identification: Part number 21E14NPSM ensures accurate selection and replacement within Carmex’s NPSM threading insert family.
These inserts are designed to streamline your threading operations: use a single, durable tool for a variety of profiles, reduce tool changes with the double-edged design, and maintain consistent thread quality across both internal and external applications. The TiAlN coating adds reliability in challenging materials, helping you achieve clean, accurate threads with fewer passes and less downtime.
| Application | Threading |
| Thread Form | NSPM |
| Internal or External | External |
| Insert Size | 21 |
| Pitch | 14 |
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 - NPSM - TiAlN Coated
View full collection →You are viewing 21E14NPSM. Click any other SKU to view its full details.
| Product SKU | Insert Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| 12I18NPSM | 12 | 18 | £32.37 | 5 days | |
| 14E18NPSM | 14 | 18 | £32.37 | 5 days | |
| 14I18NPSM | 14 | 18 | £32.37 | In Stock | |
| 21E11.5NPSM | 21 | 11.5 | £43.03 | 5 days | |
| 21E14NPSM Viewing | 21 | 14 | £43.03 | 5 days | |
| 21I11.5NPSM | 21 | 11.5 | £35.22 | In Stock | |
| 21I14NPSM | 21 | 14 | £43.03 | 5 days | |
| 30E11.5NPSM | 30 | 11.5 | £58.99 | 5 days | |
| 30E8NPSM | 30 | 8 | £58.99 | 5 days | |
| 30I11.5NPSM | 30 | 11.5 | £58.99 | 5 days | |
| 30I8NPSM | 30 | 8 | £58.99 | 5 days | |
| 40E11.5NPSM | 40 | 11.5 | £102.05 | 5 days | |
| 40E8NPSM | 40 | 8 | £102.05 | 5 days | |
| 40I11.5NPSM | 40 | 11.5 | £102.05 | 5 days |
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