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Carmex Thread Turning Holder Quick Change (CAT) Polygon - Internal - Right Hand - 70mm OAL - 16IR Insert - C5 Shank Size

Carmex Thread Turning Holder Quick Change (CAT) Polygon - Internal - Right Hand - 70mm OAL - 16IR Insert - C5 Shank Size

SKU:P50-SIR17070-16

The Carmex Quick Change CAT Polygon Thread Turning Holder is a purpose-built toolholder for CNC lathes, engineered to deliver fast, repeatable internal thread turning with reliable CAT-style tool... Read more ↓
TypeQuick Change (CAT)(Polygon)
Internal or ExternalInternal
Minimum Bore29
Shank SizeC5
HandRight
Overall Length70
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£173.98
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The Carmex Quick Change CAT Polygon Thread Turning Holder is a purpose-built toolholder for CNC lathes, engineered to deliver fast, repeatable internal thread turning with reliable CAT-style tool changes.

  • CAT Polygon Quick-Change interface: A polygon-shaped design that mates with CAT toolholder systems for rapid, secure tool changes and minimal downtime.
  • Internal thread turning capability: Specifically built to produce accurate threads inside bores and threaded holes across a range of profiles.
  • Right-hand configuration: Optimized for standard right-hand threading operations in common machining setups.
  • 70 mm overall length (OAL): Compact form that fits tight spaces on the turret or in crowded tooling magazines while preserving rigidity.
  • 16IR insert compatibility: Accepts standard 16IR inserts, ensuring consistent seating and reliable cutting performance.
  • C5 shank size: Designed to fit CAT-compatible spindles with the C5 shank specification for secure clamping and stability.
  • Durable, precision-ground body: Built from high-strength tooling material with tight tolerances to maintain thread pitch accuracy over multiple passes.
  • Versatile threading companion: Suitable for a wide range of threading applications in automotive, aerospace, and general manufacturing environments.

This holder helps machinists achieve precise thread quality while cutting setup and changeovers dramatically shorter. By combining a CAT polygon quick-change interface with a dedicated internal threading design, it minimizes downtime, stabilizes cutting forces, and supports consistent thread profiles across production runs. Ideal for shops that demand reliable, repeatable results in high-mix, high-volume threading tasks.

Type Quick Change (CAT)(Polygon)
Internal or External Internal
Minimum Bore 29
Shank Size C5
Hand Right
Overall Length 70
Insert 16IR
Reach 47

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.

★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
Bill
★★★★★
first place we look
honest about stock and prices are competitive.
Phil
★★★★★
Polite and helpful
Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
Graham
★★★★★
Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Jeremy

Full Range: Carmex Thread Turning Holders - Internal - Quick Change (CAT) Polygon

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You are viewing P50-SIR17070-16. Click any other SKU to view its full details.

Product SKUMinimum BoreShank SizeHandOverall LengthInsertReachPriceStock Order
P40-SIR12060-16 20C4Right6016IR37£156.86 5 days
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P50-SIR14060-16 25C5Right6016IR36£173.98 5 days
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P40-SIR19070-22 29C4Right7022IR48£156.86 5 days
P40-SIR22090-22 38C4Right9022IR69£156.86 5 days
P40-SIR27080-22 46C4Right8022IR60£156.86 5 days
P50-SIR15065-22 25C5Right6522IR41£173.98 5 days
P50-SIR19070-22 29C5Right7022IR47£173.98 5 days
P50-SIR22090-22 38C5Right9022IR68£173.98 5 days
P50-SIR27105-22 46C5Right10522IR84£173.98 5 days
P63-SIR19075-22 29C6Right7522IR48£292.70 5 days
P63-SIR22090-22 38C6Right9022IR64£199.04 5 days
P63-SIR27105-22 46C6Right10522IR80£199.04 5 days

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