Please log in here to access all benefits, including promotional discounts and faster checkouts.


Carmex Thread Turning Holder Carbide with Through Coolant - Internal - Right Hand - 250mm OAL - 16IR Insert - 25 Shank Size
| Type | Carbide Shank with Through Coolant |
| Internal or External | Internal |
| Minimum Bore | 29 |
| Shank Size | 25 |
| Hand | Right |
| Overall Length | 250 |
Learn more about Klarna
Designed for precision internal threading, the Carmex Thread Turning Holder with carbide shank delivers stable, reliable performance for right-hand internal threads. Built for machinists who demand consistent thread quality and dependable toolholding in demanding operations.
- Right-hand internal threading orientation: Specifically configured for internal threads cut in a right-hand direction, ensuring correct cutting geometry and chip flow for clean, accurate finishes.
- 250 mm overall length (OAL): Provides ample reach to access deep bores and blind holes while maintaining rigidity and control during light to heavy cut conditions.
- Carbide shank: High-stiffness carbide core minimizes deflection, preserves insert position, and supports high-accuracy thread forming and finishing.
- Through coolant bore: Integrated coolant channel delivers cooling fluid directly to the cutting edge, aiding chip evacuation and temperature management for longer tool life and better surface finish.
- 16IR insert compatibility: Designed to pair with standard 16IR carbide inserts, promoting stable cutting geometry and repeatable thread profiles across runs.
- Screw clamp connection: Secure, quick-release clamping between holder and insert minimizes tool movement and prevents dislocation under demanding machining conditions.
- Shank size: 25 mm shank size aligns with common tool posts and holders, simplifying setup and replacement in busy production environments.
This Carmex threading solution is ideal for shops seeking dependable internal thread turning with long-reach capability, robust rigidity, and efficient coolant delivery. It supports consistent thread quality across a range of diameters, reduces downtime through secure toolholding, and helps extend insert life by maintaining stable engagement and effective cooling.
| Type | Carbide Shank with Through Coolant |
| Internal or External | Internal |
| Minimum Bore | 29 |
| Shank Size | 25 |
| Hand | Right |
| Overall Length | 250 |
| 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 Screw Clamp Threading Bars Carbide Shank Internal - Coolant Bore - R/L Hand - for IR/IL Inserts
View full collection →You are viewing SIR0025S16CB. Click any other SKU to view its full details.
| Product SKU | Minimum Bore | Shank Size | Overall Length | Insert | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| SIR0005H06CB | 6 | 6 | 100 | 06IR | £147.04 | 5 days | |
| SIR0007K08CB | 7.8 | 8 | 125 | 08IR | £164.08 | In Stock | |
| SIR0008K08UCB | 9 | 8 | 125 | 08UIR | £196.04 | 5 days | |
| SIR0010M11CB | 12 | 10 | 150 | 11IR | £225.64 | In Stock | |
| SIR0012P11CB | 15 | 12 | 170 | 11IR | £271.00 | 5 days | |
| SIR0016R16CB | 19 | 16 | 200 | 16IR | £393.80 | 5 days | |
| SIR0020S16CB | 24 | 20 | 250 | 16IR | £485.88 | 5 days | |
| SIR0025S16CB Viewing | 29 | 25 | 250 | 16IR | £654.20 | 5 days | |
| SIR0020S22CB | 24 | 20 | 250 | 22IR | £509.56 | 5 days | |
| SIL0005H06CB | 6 | 6 | 100 | 06IL | £176.46 | 5 days | |
| SIL0007K08CB | 7.8 | 8 | 125 | 08IL | £196.90 | 5 days | |
| SIL0008K08UCB | 9 | 8 | 125 | 08UIL | £235.26 | 5 days | |
| SIL0010M11CB | 12 | 10 | 150 | 11IL | £270.72 | 5 days | |
| SIL0012P11CB | 15 | 12 | 170 | 11IL | £325.14 | 5 days | |
| SIL0016R16CB | 19 | 16 | 200 | 16IL | £472.54 | 5 days | |
| SIL0020S16CB | 24 | 20 | 250 | 16IL | £583.00 | 5 days | |
| SIL0025S16CB | 29 | 25 | 250 | 16IL | £710.08 | 5 days |
No products match your filters.