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Carmex Internal Multiple Threading Insert holder - For Carbide External/Internal Threading Inserts - SR0063C30-4

Carmex Internal Multiple Threading Insert holder - For Carbide External/Internal Threading Inserts - SR0063C30-4

SKU:SR0063C30-4

Designed for precision internal threading on CNC milling centers, the Carmex Internal Multiple Threading Insert Holder (SR0063C30-4) brings multi-insert efficiency to internal thread milling. It’s... Read more ↓
Insert Size30
Shank MaterialSteel
ReachShell Type
Overall Length50
Minimum Bore Diameter63
Flutes4
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£407.52
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Designed for precision internal threading on CNC milling centers, the Carmex Internal Multiple Threading Insert Holder (SR0063C30-4) brings multi-insert efficiency to internal thread milling. It’s ideal for shops needing reliable internal threads with lower tooling costs and higher productivity.

  • Multi-insert capacity: Holds 4–8 carbide inserts per holder for aggressive, multi-tooth engagement on internal threads.
  • Internal-threading focused: Specifically designed for internal applications on CNC mills, enabling efficient thread milling via helical interpolation.
  • Carbide insert compatibility: Utilizes multi-tooth carbide inserts to achieve higher cutting speeds and longer insert life.
  • Cost-efficient threading solution: A practical alternative to taps and dies, with easy replacement of worn inserts to keep production moving.
  • Mill-Thread family compatibility: Part of Carmex’s Mill-Thread line, offering a modular approach to consistent internal threading performance.

By using multiple carbide inserts in a single holder, you can achieve faster cutting and more consistent thread quality across diameters and pitches, thanks to shared load and simultaneous tooth engagement. The internal-only design keeps the operation focused on internal threading tasks, while the modular Mill-Thread platform makes insert changes quick and predictable, reducing downtime and per-thread cost. This approach is especially valuable for high-volume internal threads and threaded holes in automotive, aerospace, and general engineering applications. In practice, multi-insert tools can deliver meaningful productivity gains by increasing material removal rates without sacrificing accuracy, often at a lower cost per thread than traditional taps or single-point methods.

Insert Size 30
Shank Material Steel
Reach Shell Type
Overall Length 50
Minimum Bore Diameter 63
Flutes 4
Spigot Diameter 22
Insert Screw S30
Torx Key K30
Extension N/A

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.

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Staff are very helpful and interested in providing a good service making us the customer feel valued.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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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.
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Full Range: Carmex Internal Multiple Threading Insert holders - For Carbide External/Internal Threading Inserts

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You are viewing SR0063C30-4. Click any other SKU to view its full details.

Product SKUInsert SizeOverall LengthMinimum Bore DiameterFlutesSpigot DiameterPriceStock Order
SR0063C21-5 215063522£407.52 5 days
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