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16EL0.5ISOK20 - Carmex Thread Turning External Insert - Metric - Left Hand
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | Metric |
| Pitch | 0.5 |
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Description
The Carmex Thread Turning External Insert is a metric, left-hand external threading insert (16EL0.5ISOK20) designed for external threading operations. Its laydown triangular geometry supports stable engagement and consistent cutting across a wide range of thread standards.
Ideal for a broad audience—from engineers and buyers to machinists and hobbyists—the insert delivers dependable external threading performance for metric left-hand threads, from simple tasks to demanding projects.
- Broad thread standard compatibility: Designed to cover the majority of thread standards in use today, this insert reduces the need to stock multiple tools and keeps your machining setup flexible across common forms.
- Stable, efficient cutting with laydown triangular geometry: Laydown triangular geometry delivers stable engagement and predictable cutting performance, promoting consistent thread dimensions and cleaner finishes.
- Metric left-hand threading ready: Optimized for metric left-hand threads, ensuring correct threading direction and reliable results across a variety of materials.
Together, these features translate into a versatile, dependable option that simplifies tooling decisions, reduces tool changes during setup, and helps you achieve consistent, professional thread quality—from simple tasks to demanding projects.
Part Numbers
- Protool Part Number
- 16EL0.5ISOK20
- 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.
