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Carmex Spiral Mill Threading Insert - NPT - H23-11.5NPTMT7
| Application | Threading |
| Thread Form | NPT |
| Internal or External | Internal & External |
| Insert Size | H23 |
| Pitch | 11.5 |
| Holder Code | SRH23… |
Learn more about Klarna
The Carmex Spiral Mill Threading Insert – NPT is a versatile, high-performance cutting insert designed for precision NPT threading and broader milling tasks. It’s built for a wide range of shops—from compact machining centers handling small components to heavy-duty production environments—delivering smooth cuts at higher feed rates to reduce overall cycle times.
With MT7 Sub-Micron Grade inserts and a Titanium Nitride multi-layer coating (ISO K10–K20), this tool combines wear resistance with a reliable finish across materials. Its spiral flute geometry and a unique clamping method support efficient indexing and long tool life, making it a dependable choice for threading, end milling roughing, and finishing in diverse applications.
- Smooth, high‑feed threading: Spiral design enables fast cutting and reduced cycle times while maintaining clean, accurate NPT threads.
- Flexible insert capacity with reliable indexing: Toolholders accommodate 1 to 9 inserts in a compact diameter, with a clamping system that ensures optimal indexability and stable operation.
- Durable MT7 Sub‑Micron TiN coating: Sub-micron grade inserts with TiN multilayer coating deliver wear resistance across materials (ISO K10–K20) for consistent performance in threading and milling.
This insert is designed to deliver consistent results across a variety of materials and applications, helping you maintain tight tolerances, reduce downtime, and improve overall workflow. Whether you’re producing small, high-precision parts or tackling demanding milling tasks, it provides dependable performance, smooth finishes, and a clear path to efficient, repeatable results.
| Application | Threading |
| Thread Form | NPT |
| Internal or External | Internal & External |
| Insert Size | H23 |
| Pitch | 11.5 |
| Holder Code | SRH23… |
| Fig | 2 |
| Thread Size | 1 - 2 |
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 Spiral Mill Threading Inserts - NPT
View full collection →You are viewing H23-11.5NPTMT7. Click any other SKU to view its full details.
| Product SKU | Insert Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| H13-18NPTMT7 | H13 | 18 | £50.98 | 5 days | |
| H15-14NPTMT7 | H15 | 14 | £50.98 | 5 days | |
| H17-14NPTMT7 | H17 | 14 | £50.98 | 5 days | |
| H23-11.5NPTMT7 Viewing | H23 | 11.5 | £48.14 | 5 days | |
| H32-14NPTMT7 | H32 | 14 | £65.22 | 5 days | |
| H32-11.5NPTMT7 | H32 | 11.5 | £50.96 | 5 days | |
| H45-11.5NPTMT7 | H45 | 11.5 | £56.58 | 5 days | |
| H45-8NPTMT7 | H45 | 8 | £69.10 | 5 days | |
| H63-11.5NPTMT7 | H63 | 11.5 | £56.58 | 5 days | |
| H63-8NPTMT7 | H63 | 8 | £69.10 | 5 days |
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