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Carmex Thread Turning Holder Through Coolant - Internal - Left Hand - 170mm OAL - 16IL Insert - 20 Shank Size
| Type | Through Coolant |
| Internal or External | Internal |
| Minimum Bore | 24 |
| Shank Size | 20 |
| Hand | Left |
| Overall Length | 170 |
Learn more about Klarna
The Carmex Thread Turning Holder Through Coolant for internal threading is a precision tool designed for machinists performing deep, accurate internal threads. This left-hand (IL) variant is built for dependable performance in demanding applications, with a through-coolant design that supports efficient chip evacuation and consistent cooling.
- Through-Coolant Bore: Integrated coolant channel delivers fluid directly to the cutting edge to improve chip evacuation and thermal management during internal threading.
- Internal Threading Capability: Engineered for precise internal threads with versatility for both right-hand (IR) and left-hand (IL) threading applications via a secure screw clamp.
- Left-Hand Internal Threading (IL): Specifically configured to work with IL inserts, delivering clean, accurate left-hand threads in a variety of materials.
- 170 mm Overall Length (OAL): Extended reach for deep bore threading while maintaining rigidity and control.
- 20 mm Shank Size: Stable interface with compatible tool holders to ensure consistent cutting performance.
- 16IL Insert Compatibility: Designed to mate securely with 16IL inserts for dependable threading geometry and finish.
- Screw Clamp Connection: Positive, robust clamping minimizes insert movement and reduces the risk of tool dislocation during heavy cuts.
- Rugged Precision Construction: Built to perform reliably in demanding machining environments with repeatable results.
This holder helps you achieve precise internal threads with improved surface finish, thanks to optimized clearance and robust alignment. The through-coolant design reduces chip buildup and cools the cutting edge, extending insert life and lowering downtime. The screw-clamp system ensures a secure fit between bar and insert, so you can trust your internal threading operations from run to run across a range of bore sizes and materials.
| Type | Through Coolant |
| Internal or External | Internal |
| Minimum Bore | 24 |
| Shank Size | 20 |
| Hand | Left |
| Overall Length | 170 |
| Insert | 16IL |
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 Internal - Coolant Bore - Right/Left Hand - For IR/IL Inserts
View full collection →You are viewing SIL0020P16B. Click any other SKU to view its full details.
| Product SKU | Type | Internal or External | Minimum Bore | Shank Size | Hand | Overall Length | Insert | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|---|
| SIR0010K11B | Through Coolant | Internal | 12 | 16 | Right | 125 | 11IR | £54.72 | 5 days | |
| SIR0013M16B | Through Coolant | Internal | 16 | 16 | Right | 150 | 16IR | £54.72 | 5 days | |
| SIR0016P16B | Through Coolant | Internal | 19 | 20 | Right | 170 | 16IR | £54.72 | 5 days | |
| SIR0020P16B | Through Coolant | Internal | 24 | 20 | Right | 170 | 16IR | £61.74 | 5 days | |
| SIR0025R16B | Through Coolant | Internal | 29 | 25 | Right | 200 | 16IR | £79.14 | 5 days | |
| SIR0025R22B | Through Coolant | Internal | 29 | 25 | Right | 200 | 22IR | £75.98 | 5 days | |
| SIR0032S16B | Through Coolant | Internal | 36 | 32 | Right | 250 | 16IR | £153.93 | 5 days | |
| SIL0010K11B | Through Coolant | Internal | 12 | 16 | Left | 125 | 11IL | £65.64 | 5 days | |
| SIL0013M16B | Through Coolant | Internal | 16 | 16 | Left | 150 | 16IL | £65.64 | 5 days | |
| SIL0016P16B | Through Coolant | Internal | 19 | 20 | Left | 170 | 16IL | £65.64 | 5 days | |
| SIL0020P16B Viewing | Through Coolant | Internal | 24 | 20 | Left | 170 | 16IL | £74.08 | 5 days | |
| SIL0025R16B | Through Coolant | Internal | 29 | 25 | Left | 200 | 16IL | £94.98 | 5 days | |
| SIL0025R22B | Through Coolant | Internal | 29 | 25 | Left | 200 | 22IL | £91.18 | 5 days | |
| SIL0032S16B | Through Coolant | Internal | 36 | 32 | Left | 250 | 16IL | £123.12 | 5 days |
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