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Carmex Thread Turning Internal Insert - 55 Degree Partial - Left Hand - 16ILG55K20
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | 55 Degree Partial |
| Pitch | 1.75-3.0 (14-8) |
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The ones our customers buy most.Description
Carmex Thread Turning Internal Insert is a 55° partial, left-hand, laydown triangular insert designed for internal thread turning. It’s built to cover a wide range of thread standards and handle applications from simple to demanding, making it a versatile choice for machinists, engineers, and shop floors alike.
- 55° Partial, Left-Hand geometry: Optimizes engagement for internal thread turning and left-hand operations, delivering efficient cutting action and consistent thread formation.
- Broad thread-standards compatibility: Designed to provide solutions for the majority of thread standards in use today, reducing setup time and inventory needs.
- High-quality laydown triangular design: Built for reliable, steady performance across a wide range of tasks, from straightforward jobs to more challenging threading work.
This insert helps you streamline production by enabling accurate, dependable internal threads with fewer tool changes. Its geometry and design support steady workflows, helping you maintain quality across batches and hit tighter production schedules with confidence.
Part Numbers
- Protool Part Number
- 16ILG55K20
- Brand
- Carmex
- Category
- Thread Turning
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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.



