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Carmex Thread Turning Holder Special Thread Turning Applications - Internal - Right Hand - 140mm OAL - 16IR Insert - 20 Shank Size
| Type | Special Thread Turning Applications |
| Internal or External | Internal |
| Minimum Bore | TR18 x 4 |
| Shank Size | 20 |
| Hand | Right |
| Overall Length | 140 |
Learn more about Klarna
The Carmex Internal Thread Turning Holder is a precision toolholder designed for accurate internal threading on CNC lathes and turning centers. Built for right-hand applications, it delivers reliable, consistent threads in demanding machining environments.
- Right-hand internal thread turning design: optimized geometry for controlled entry and stable cutting during internal threading operations.
- 140 mm overall length (OAL): extended reach combined with rigid support for precise thread forming.
- 20 mm shank size: compatible with standard tooling setups while maintaining strong, vibration-damped engagement.
- 16IR insert compatibility: accepts 16IR inserts to cover a wide range of thread profiles and pitches.
- Rigid construction with vibration damping: engineered to minimize chatter, delivering cleaner thread surfaces and longer tool life.
- Versatile threading capability: suitable for multiple internal thread profiles with interchangeable inserts for quick setup changes.
Designed for machinists seeking reliable, repeatable internal threads, this holder reduces setup time and improves surface finish. The combination of a robust build, precise geometry, and broad insert compatibility helps maintain consistent thread quality across production runs, even when faced with challenging materials or tight tolerances.
| Type | Special Thread Turning Applications |
| Internal or External | Internal |
| Minimum Bore | TR18 x 4 |
| Shank Size | 20 |
| Hand | Right |
| Overall Length | 140 |
| Insert | 16IR |
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 Special Thread Turning Applications - Thread Turning Toolholders - Internal
View full collection →You are viewing SIR0012L16B. Click any other SKU to view its full details.
| Product SKU | Minimum Bore | Shank Size | Overall Length | Insert | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| SIR0009K08 | 1/2 - 13 UNC | 16 | 125 | 08IR | £51.86 | In Stock | |
| SIR0012L16B Viewing | TR18 x 4 | 20 | 140 | 16IR | £62.94 | In Stock | |
| SIR0014L16B | TR20 x 4 | 20 | 140 | 16IR | £62.94 | 5 days | |
| SIR0014M16UB | TR22 x 5 | 20 | 150 | 16UER | £68.40 | 5 days | |
| SIR0025S22UB | TR40 x 7 | 25 | 250 | 22UER | £80.64 | 5 days |
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