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16IR3.5ISOBMA - Carmex Thread Turning Internal Insert - Metric - Right Hand
SKU:16IR3.5ISOBMA
The Carmex Thread Turning Internal Insert – Metric – Right Hand – 16IR3.5 is a precision tool designed for internal threading in metric holes. It belongs to Carmex’s globally recognized thread tu...
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Material Compatibility
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Specifications at a glance
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Download Cutting Data
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | Metric |
| Pitch | 3.5 |
£9.50
per item · pack of 2
Prices shown ex. VAT
In Stock
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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Description
The Carmex Thread Turning Internal Insert – Metric – Right Hand – 16IR3.5 is a precision tool designed for internal threading in metric holes. It belongs to Carmex’s globally recognized thread turning family, offering reliable performance across a broad range of standards and applications—from simple holes to more demanding production work.
- Broad metric thread compatibility: Designed to cover a wide range of metric thread standards, reducing tool changes and enabling you to complete more jobs with a single insert.
- Triangular laydown geometry: The laydown triangular shape provides stable cutting and a smooth surface finish on threaded holes, improving first-pass results and reducing rework.
- Right-hand internal threading, ready for production: Specifically oriented for right-hand internal threads, enabling quick setup and consistent, reliable performance on standard machines.
This insert helps streamline your threading workflow by delivering dependable, consistent results across a spectrum of applications. With a design optimized for metric internal threads, you’ll experience fewer tool changes, reduced downtime, and improved thread quality—supporting higher throughput and better overall productivity in shop-floor and job-site environments.
Part Numbers
- Protool Part Number
- 16IR3.5ISOBMA
- 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.
Ask our technical team about this tool
Full Range: Carmex Thread Turning Internal Inserts - ISO - Right/Left Hand
View full collection →You are viewing 16IR3.5ISOBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 06IL0.5ISOBMA | Internal | Left Hand | Metric | 0.5 | 6 | BMA | £11.58 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 06IL0.5ISOBXC | Internal | Left Hand | Metric | 0.5 | 6 | BXC | £13.88 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IL0.75ISOBMA | Internal | Left Hand | Metric | 0.75 | 6 | BMA | £11.58 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 06IL0.75ISOBXC | Internal | Left Hand | Metric | 0.75 | 6 | BXC | £13.88 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IL1.0ISOBMA | Internal | Left Hand | Metric | 1 | 6 | BMA | £8.90 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 06IL1.0ISOBXC | Internal | Left Hand | Metric | 1 | 6 | BXC | £13.88 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IL1.25ISOBMA | Internal | Left Hand | Metric | 1.25 | 6 | BMA | £8.90 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 06IL1.25ISOBXC | Internal | Left Hand | Metric | 1.25 | 6 | BXC | £13.88 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IR0.5ISOBMA | Internal | Right Hand | Metric | 0.5 | 6 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 06IR0.5ISOBXC | Internal | Right Hand | Metric | 0.5 | 6 | BXC | £11.60 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IR0.75ISOBMA | Internal | Right Hand | Metric | 0.75 | 6 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 06IR0.75ISOBXC | Internal | Right Hand | Metric | 0.75 | 6 | BXC | £11.60 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IR1.0ISOBMA | Internal | Right Hand | Metric | 1 | 6 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 06IR1.0ISOBXC | Internal | Right Hand | Metric | 1 | 6 | BXC | £11.60 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IR1.25ISOBMA | Internal | Right Hand | Metric | 1.25 | 6 | BMA | £11.60 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 06IR1.25ISOBXC | Internal | Right Hand | Metric | 1.25 | 6 | BXC | £11.60 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 08IL0.5ISOBMA | Internal | Left Hand | Metric | 0.5 | 8 | BMA | £11.58 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IL0.75ISOBMA | Internal | Left Hand | Metric | 0.75 | 8 | BMA | £11.58 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IL1.0ISOBMA | Internal | Left Hand | Metric | 1 | 8 | BMA | £13.88 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IL1.25ISOBMA | Internal | Left Hand | Metric | 1.25 | 8 | BMA | £8.90 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 08IL1.5ISOBMA | Internal | Left Hand | Metric | 1.5 | 8 | BMA | £13.88 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IL1.75ISOBMA | Internal | Left Hand | Metric | 1.75 | 8 | BMA | £13.88 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IR0.25ISOBMA | Internal | Right Hand | Metric | 0.25 | 8 | BMA | £15.05 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 08IR0.5ISOBMA | Internal | Right Hand | Metric | 0.5 | 8 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 08IR0.75ISOBMA | Internal | Right Hand | Metric | 0.75 | 8 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 08IR1.0ISOBMA | Internal | Right Hand | Metric | 1 | 8 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 08IR1.25ISOBMA | Internal | Right Hand | Metric | 1.25 | 8 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 08IR1.5ISOBMA | Internal | Right Hand | Metric | 1.5 | 8 | BMA | £11.60 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 08IR1.75ISOBMA | Internal | Right Hand | Metric | 1.75 | 8 | BMA | £11.60 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IL0.35ISOBMA | Internal | Left Hand | Metric | 0.35 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL0.45ISOBMA | Internal | Left Hand | Metric | 0.45 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL0.4ISOBMA | Internal | Left Hand | Metric | 0.4 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL0.5ISOBMA | Internal | Left Hand | Metric | 0.5 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL0.6ISOBMA | Internal | Left Hand | Metric | 0.6 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL0.75ISOBMA | Internal | Left Hand | Metric | 0.75 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL0.7ISOBMA | Internal | Left Hand | Metric | 0.7 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL0.8ISOBMA | Internal | Left Hand | Metric | 0.8 | 11 | BMA | £8.10 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 11IL1.0ISOBMA | Internal | Left Hand | Metric | 1 | 11 | BMA | £10.55 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL1.25ISOBMA | Internal | Left Hand | Metric | 1.25 | 11 | BMA | £10.55 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL1.5ISOBMA | Internal | Left Hand | Metric | 1.5 | 11 | BMA | £10.55 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL1.75ISOBMA | Internal | Left Hand | Metric | 1.75 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IR0.35ISOBMA | Internal | Right Hand | Metric | 0.35 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR0.45ISOBMA | Internal | Right Hand | Metric | 0.45 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR0.4ISOBMA | Internal | Right Hand | Metric | 0.4 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR0.5ISOBMA | Internal | Right Hand | Metric | 0.5 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR0.6ISOBMA | Internal | Right Hand | Metric | 0.6 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR0.75ISOBMA | Internal | Right Hand | Metric | 0.75 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR0.7ISOBMA | Internal | Right Hand | Metric | 0.7 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR0.8ISOBMA | Internal | Right Hand | Metric | 0.8 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR1.0ISOBMA | Internal | Right Hand | Metric | 1 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR1.25ISOBMA | Internal | Right Hand | Metric | 1.25 | 11 | BMA | £10.55 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR1.5ISOBMA | Internal | Right Hand | Metric | 1.5 | 11 | BMA | £10.55 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR2.5ISOBMA | Internal | Right Hand | Metric | 2.5 | 11 | BMA | £10.55 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16IL0.35ISOBMA | Internal | Left Hand | Metric | 0.35 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL0.45ISOBMA | Internal | Left Hand | Metric | 0.45 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL0.4ISOBMA | Internal | Left Hand | Metric | 0.4 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL0.5ISOBMA | Internal | Left Hand | Metric | 0.5 | 16 | BMA | £12.31 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL0.6ISOBMA | Internal | Left Hand | Metric | 0.6 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL0.75ISOBMA | Internal | Left Hand | Metric | 0.75 | 16 | BMA | £12.31 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL0.7ISOBMA | Internal | Left Hand | Metric | 0.7 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL0.8ISOBMA | Internal | Left Hand | Metric | 0.8 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL1.0ISOBMA | Internal | Left Hand | Metric | 1 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL1.25ISOBMA | Internal | Left Hand | Metric | 1.25 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL1.5ISOBMA | Internal | Left Hand | Metric | 1.5 | 16 | BMA | £9.50 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 16IL1.75ISOBMA | Internal | Left Hand | Metric | 1.75 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL2.0ISOBMA | Internal | Left Hand | Metric | 2 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL2.5ISOBMA | Internal | Left Hand | Metric | 2.5 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL3.0ISOBMA | Internal | Left Hand | Metric | 3 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL3.5ISOBMA | Internal | Left Hand | Metric | 3.5 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IR0.35ISOBMA | Internal | Right Hand | Metric | 0.35 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR0.45ISOBMA | Internal | Right Hand | Metric | 0.45 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR0.4ISOBMA | Internal | Right Hand | Metric | 0.4 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR0.5ISOBMA | Internal | Right Hand | Metric | 0.5 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR0.6ISOBMA | Internal | Right Hand | Metric | 0.6 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR0.75ISOBMA | Internal | Right Hand | Metric | 0.75 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR0.7ISOBMA | Internal | Right Hand | Metric | 0.7 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR0.8ISOBMA | Internal | Right Hand | Metric | 0.8 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR1.0ISOBMA | Internal | Right Hand | Metric | 1 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR1.25ISOBMA | Internal | Right Hand | Metric | 1.25 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR1.5ISOBMA | Internal | Right Hand | Metric | 1.5 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR1.75ISOBMA | Internal | Right Hand | Metric | 1.75 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR2.0ISOBMA | Internal | Right Hand | Metric | 2 | 16 | BMA | £9.50 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16IR2.5ISOBMA | Internal | Right Hand | Metric | 2.5 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR3.0ISOBMA | Internal | Right Hand | Metric | 3 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR3.5ISOBMA Viewing | Internal | Right Hand | Metric | 3.5 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22IL3.5ISOBMA | Internal | Left Hand | Metric | 3.5 | 22 | BMA | £13.93 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IL4.0ISOBMA | Internal | Left Hand | Metric | 4 | 22 | BMA | £13.93 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IL4.5ISOBMA | Internal | Left Hand | Metric | 4.5 | 22 | BMA | £13.93 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IL5.0ISOBMA | Internal | Left Hand | Metric | 5 | 22 | BMA | £13.93 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IL5.5ISOBMA | Internal | Left Hand | Metric | 5.5 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IL6.0ISOBMA | Internal | Left Hand | Metric | 6 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IR3.5ISOBMA | Internal | Right Hand | Metric | 3.5 | 22 | BMA | £13.93 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 22IR4.0ISOBMA | Internal | Right Hand | Metric | 4 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22IR4.5ISOBMA | Internal | Right Hand | Metric | 4.5 | 22 | BMA | £13.93 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 22IR5.0ISOBMA | Internal | Right Hand | Metric | 5 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22IR5.5ISOBMA | Internal | Right Hand | Metric | 5.5 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22IR6.0ISOBMA | Internal | Right Hand | Metric | 6 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 27IL5.5ISOBMA | Internal | Left Hand | Metric | 5.5 | 27 | BMA | £15.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 27IL6.0ISOBMA | Internal | Left Hand | Metric | 6 | 27 | BMA | £19.64 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 27IR5.5ISOBMA | Internal | Right Hand | Metric | 5.5 | 27 | BMA | £19.64 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 27IR6.0ISOBMA | Internal | Right Hand | Metric | 6 | 27 | BMA | £19.64 per item · pack of 2 | In Stock | Sold in packs of 2 |
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