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Carmex Thread Turning Internal Insert - 55 Degree Partial - Right Hand - 16IRA55BMA
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | 55 Degree Partial |
| Pitch | 0.5-1.5 (48-16) |
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The Carmex Thread Turning Internal Insert, 16IRA55BMA, is a versatile 55° partial internal insert designed for internal threading tasks in bores and blind holes. It features a right-hand cutting action and belongs to Carmex’s industry-leading line of laydown triangular inserts, capable of handling a wide range of thread standards from basic to demanding applications.
This insert is built to deliver consistent results across diverse threading jobs, making it a reliable choice for both quick shop fixes and busy production environments.
- 55° Partial geometry: Optimized for clean, accurate internal threads in restricted bores, typically delivering better surface finish and fewer passes than non-specialized inserts.
- Right-hand cutting action: Provides predictable thread form and wear, simplifying setup and ensuring repeatable results across multiple runs.
- Broad thread-standards compatibility: Designed to cover a wide range of standard threads, reducing the need for multiple inserts and speeding up job setups.
Whether you’re a professional machinist, shop engineer, or hobbyist tackling precise internal threads, this insert helps you complete tasks faster with reliable, repeatable results. The 55° geometry and right-hand orientation support consistent thread forms across many standards, minimizing downtime and rework while keeping production moving smoothly. Trust Carmex’s manufacturing quality to perform under demanding applications and daily use.
Part Numbers
- Protool Part Number
- 16IRA55BMA
- 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 - Partial Profile 55° - Right/Left Hand
View full collection →You are viewing 16IRA55BMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 06IRA55BMA | Internal | Right Hand | 55 Degree Partial | 0.5-1.25 (48-20) | 6 | BMA | £11.60 | In Stock | |
| 08ILA55BMA | Internal | Left Hand | 55 Degree Partial | 0.5-1.5 (48-16) | 8 | BMA | £8.90 | In Stock | |
| 08IRA55BMA | Internal | Right Hand | 55 Degree Partial | 0.5-1.5 (48-16) | 8 | BMA | £11.60 | 5 days | |
| 11ILA55BMA | Internal | Left Hand | 55 Degree Partial | 0.50-1.50 (48-16) | 11 | BMA | £8.10 | In Stock | |
| 11IRA55BMA | Internal | Right Hand | 55 Degree Partial | 0.50-1.50 (48-16) | 11 | BMA | £10.55 | 5 days | |
| 16ILA55BMA | Internal | Left Hand | 55 Degree Partial | 0.5-1.5 (48-16) | 16 | BMA | £9.50 | In Stock | |
| 16ILAG55BMA | Internal | Left Hand | 55 Degree Partial | 0.5-3.0 (48-8) | 16 | BMA | £9.50 | 5 days | |
| 16ILG55BMA | Internal | Left Hand | 55 Degree Partial | 1.75-3.0 (14-8) | 16 | BMA | £9.50 | 5 days | |
| 16IRA55BMA Viewing | Internal | Right Hand | 55 Degree Partial | 0.5-1.5 (48-16) | 16 | BMA | £9.50 | In Stock | |
| 16IRAG55BMA | Internal | Right Hand | 55 Degree Partial | 0.5-3.0 (48-8) | 16 | BMA | £9.50 | In Stock | |
| 16IRG55BMA | Internal | Right Hand | 55 Degree Partial | 1.75-3.0 (14-8) | 16 | BMA | £9.50 | 5 days | |
| 22ILN55BMA | Internal | Left Hand | 55 Degree Partial | 3.5-5.0 (7-5) | 22 | BMA | £10.69 | 5 days | |
| 22IRN55BMA | Internal | Right Hand | 55 Degree Partial | 3.5-5.0 (7-5) | 22 | BMA | £13.93 | 5 days | |
| 27ILQ55BMA | Internal | Left Hand | 55 Degree Partial | 5.5-6.0 (4.5-4) | 27 | BMA | £15.10 | 5 days | |
| 27IRQ55BMA | Internal | Right Hand | 55 Degree Partial | 5.5-6.0 (4.5-4) | 27 | BMA | £19.64 | 5 days | |
| 11IRA55BXC | Internal | Right Hand | 55 Degree Partial | 0.50-1.50 (48-16) | 11 | BXC | £8.93 | In Stock |
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