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16IL12WBMA - Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Left Hand
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | W (BSW BSF BSP BSB) |
| Pitch | 12 |
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Carmex Thread Turning Internal Insert – Left Hand (W) is a precision cutting insert designed for internal threading tasks. Built to cover multiple thread standards, including BSW, BSF, BSP, and BSB, it’s a versatile choice for engineers, machinists, and maintenance shops that need one tool to handle a wide range of applications.
- Broad thread compatibility: Supports BSW, BSF, BSP, and BSB with left-hand threading, reducing tool changes and inventory while delivering reliable internal threads across common standards.
- Laydown triangular geometry for clean, consistent threads: The proven triangular laydown shape provides stable cutting action, excellent chip control, and smooth thread finishes on a variety of materials.
- Durable, reliable performance for basic to demanding applications: Engineered for long life and predictable results, ensuring you can tackle simple jobs and tougher threading tasks with confidence.
This insert helps you complete internal threading work more efficiently by minimizing tool changes, speeding up setups, and delivering repeatable thread quality. Whether you’re prototyping or running high-volume production, it supports steady workflow, consistent results, and less rework, so you can meet deadlines with greater certainty.
Part Numbers
- Protool Part Number
- 16IL12WBMA
- 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.
Full Range: Carmex Thread Turning Internal Inserts - Whitworth - Right/Left Hand
View full collection →You are viewing 16IL12WBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 06IL26WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 26 | 6 | BMA | £8.90 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 06IR18WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 18 | 6 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 06IR18WBXC | Internal | Right Hand | W (BSW BSF BSP BSB) | 18 | 6 | BXC | £11.60 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IR20WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 20 | 6 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 06IR20WBXC | Internal | Right Hand | W (BSW BSF BSP BSB) | 20 | 6 | BXC | £11.60 per item · pack of 10 | 5 days | Sold in packs of 10 |
| 06IR22WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 22 | 6 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 06IR26WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 26 | 6 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 08IL18WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 18 | 8 | BMA | £8.90 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IL19WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 19 | 8 | BMA | £8.90 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 08IL20WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 20 | 8 | BMA | £13.88 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IL24WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 24 | 8 | BMA | £8.90 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 08IL28WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 28 | 8 | BMA | £8.90 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 08IR16WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 16 | 8 | BMA | £11.60 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 08IR18WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 18 | 8 | BMA | £11.60 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 08IR19WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 19 | 8 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 08IR20WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 20 | 8 | BMA | £11.60 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 08IR24WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 24 | 8 | BMA | £11.60 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 08IR28WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 28 | 8 | BMA | £11.60 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IL11WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 11 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL12WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 12 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL14WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 14 | 11 | BMA | £10.55 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL16WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 16 | 11 | BMA | £10.55 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL18WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 18 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL19WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 19 | 11 | BMA | £10.55 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL20WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 20 | 11 | BMA | £8.10 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 11IL22WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 22 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL24WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 24 | 11 | BMA | £8.10 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 11IL26WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 26 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL28WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 28 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL32WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 32 | 11 | BMA | £8.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL36WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 36 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL40WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 40 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL48WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 48 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL56WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 56 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL60WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 60 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IL72WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 72 | 11 | BMA | £10.53 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 11IR11WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 11 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR12WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 12 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR14WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 14 | 11 | BMA | £10.55 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR16WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 16 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR18WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 18 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR19WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 19 | 11 | BMA | £10.55 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR20WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 20 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR22WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 22 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR24WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 24 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR26WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 26 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR28WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 28 | 11 | BMA | £10.55 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR32WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 32 | 11 | BMA | £10.55 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR36WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 36 | 11 | BMA | £13.68 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 11IR40WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 40 | 11 | BMA | £10.55 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR48WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 48 | 11 | BMA | £10.53 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR56WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 56 | 11 | BMA | £10.53 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR60WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 60 | 11 | BMA | £10.53 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 11IR72WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 72 | 11 | BMA | £10.53 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16IL10WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 10 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL11WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 11 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL12WBMA Viewing | Internal | Left Hand | W (BSW BSF BSP BSB) | 12 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL14WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 14 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL16WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 16 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL18WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 18 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL19WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 19 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL20WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 20 | 16 | BMA | £9.50 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL22WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 22 | 16 | BMA | £9.50 per item · pack of 5 | In Stock | Sold in packs of 5 |
| 16IL24WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 24 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL26WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 26 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL28WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 28 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL32WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 32 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL36WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 36 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL40WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 40 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL48WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 48 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL56WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 56 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL60WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 60 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL72WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 72 | 16 | BMA | £9.47 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL8WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 8 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IL9WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 9 | 16 | BMA | £7.29 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 16IR10WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 10 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR11WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 11 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR12WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 12 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR14WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 14 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR16WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 16 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR18WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 18 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR19WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 19 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR20WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 20 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR22WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 22 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR24WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 24 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR26WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 26 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR28WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 28 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR32WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 32 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR36WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 36 | 16 | BMA | £12.31 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR40WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 40 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR48WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 48 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR56WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 56 | 16 | BMA | £9.47 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16IR60WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 60 | 16 | BMA | £9.47 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16IR72WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 72 | 16 | BMA | £9.47 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 16IR8WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 8 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 16IR9WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 9 | 16 | BMA | £9.50 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22IL5WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 5 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IL6WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 6 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IL7WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 7 | 22 | BMA | £10.69 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 22IR5WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 5 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22IR6WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 6 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 22IR7WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 7 | 22 | BMA | £13.93 per item · pack of 2 | In Stock | Sold in packs of 2 |
| 27IL4.5WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 4.5 | 27 | BMA | £15.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 27IL4WBMA | Internal | Left Hand | W (BSW BSF BSP BSB) | 4 | 27 | BMA | £15.10 per item · pack of 5 | 5 days | Sold in packs of 5 |
| 27IR4.5WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 4.5 | 27 | BMA | £15.10 per item · pack of 2 | 5 days | Sold in packs of 2 |
| 27IR4WBMA | Internal | Right Hand | W (BSW BSF BSP BSB) | 4 | 27 | BMA | £19.64 per item · pack of 2 | In Stock | Sold in packs of 2 |
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