Please log in here to access all benefits, including promotional discounts and faster checkouts.

Baer Heli Coil Tap - Wire Thread Insert - Spiral Point Tap (STI) - Metric - M12 x 1.25
| Thread Form | Metric |
| Size | M12 |
| Pitch | 1.25 |
| Lead | Spiral Point Tap (STI) |
Learn more about Klarna
Description
Meet the Baer Heli Coil Tap — a precision tool built for flawless thread repair and reinforcement with metric accuracy. Specifically designed for M12 x 1.25 threads, this Spiral Point Tap (STI) cuts clean, true threads that perfectly accommodate Heli-Coil wire thread inserts. When a hole’s threads are damaged or stripped, this tap restores original strength and service life without the guesswork.
- Accurate, repeatable threads. Precise geometry ensures clean cutting action every time, producing reliable threads ready for a Heli-Coil insert or direct use where applicable.
- Spiral flute for efficient chip evacuation. The spiral design sweeps chips forward, reducing clogging and lowering the risk of cross-threading in hard materials.
- Metric specialization for M12 x 1.25. Engineered to deliver consistent results in metric applications, so you can rely on exact fit and long-term durability.
- Rugged durability for demanding environments. Built to withstand repeated use in automotive, industrial, and maintenance settings where strong, repairable threads matter most.
- Versatile application with inserts. Ideal for preparing holes to accept wire thread inserts (Heli-Coil) or re-tapping holes already designed for standard inserts, delivering repair-grade strength in critical components.
Who needs the Baer Heli Coil Tap? Machinists, maintenance technicians, auto repair specialists, and DIY enthusiasts who routinely revive damaged threads and extend the life of essential parts. Whether you’re restoring a zinc-plated aluminum housing, repairing a steel bracket, or reviving a threaded hole in a high-stress assembly, this tap provides the precision you require and the durability you demand.
Compared to generic taps, the Baer Heli Coil Tap offers purposeful design clarity: optimized pitch and flute geometry tuned for M12 x 1.25 threads, reduced cutting torque, clearer chip removal, and a clean, repeatable finish that minimizes post-tap cleanup. The result is stronger threads that hold better, perform more reliably, and reduce downtime caused by damaged holes.
Practical tips for best results: - Use with compatible drills and guides to maintain perpendicular alignment and prevent mis-taps. - Begin with a light touch to establish thread engagement, then progress to full depth with steady, even pressure. - Verify hole size and insert compatibility before tapping to ensure a perfect fit and long-term durability.

Part Numbers
- Protool Part Number
- BAER-B3522
- Brand
- BAER
- Category
- Heli Coil Tap
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
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: Baer Heli Coil Taps - Wire Thread Insert - Spiral Point Tap (STI) - Metric
View full collection →You are viewing BAER-B3522. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Tap Diameter (D1) | Flute Length (L2) | Overall Length (L1) | Shank Diameter (D2) | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| BAER-B3505 | M3 | 0.5 | 3.6 | 13 | 53 | 4 | £17.55 | 5 days | |
| BAER-B3506 | M3.5 | 0.6 | 4.3 | 13 | 53 | 4.5 | £17.55 | 5 days | |
| BAER-B3507 | M4 | 0.7 | 4.9 | 16 | 58 | 5 | £18.69 | 5 days | |
| BAER-B3508 | M5 | 0.8 | 6 | 19 | 66 | 6.3 | £18.69 | 5 days | |
| BAER-B3509 | M6 | 1 | 7.3 | 22 | 72 | 8 | £18.69 | 5 days | |
| BAER-B3510 | M7 | 1 | 8.3 | 22 | 72 | 9 | £24.89 | 5 days | |
| BAER-B3511 | M8 | 1.25 | 9.6 | 24 | 80 | 10 | £26.84 | 5 days | |
| BAER-B3512 | M8 | 1 | 9.3 | 24 | 80 | 10 | £26.84 | 5 days | |
| BAER-B3515 | M10 | 1.5 | 11.9 | 29 | 89 | 9 | £31.70 | 5 days | |
| BAER-B3517 | M10 | 1 | 11.3 | 25 | 85 | 8 | £31.70 | 5 days | |
| BAER-B3520 | M12 | 1.75 | 14.3 | 30 | 95 | 11.2 | £34.14 | 5 days | |
| BAER-B3521 | M12 | 1.5 | 14 | 30 | 95 | 11.2 | £42.29 | 5 days | |
| BAER-B3522 Viewing | M12 | 1.25 | 13.6 | 30 | 95 | 11.2 | £42.29 | 5 days | |
| BAER-B3527 | M14 | 2 | 16.6 | 32 | 102 | 12.5 | £42.29 | 5 days | |
| BAER-B3528 | M14 | 1.5 | 16 | 32 | 102 | 12.5 | £47.16 | 5 days | |
| BAER-B3529 | M14 | 1.25 | 15.6 | 32 | 102 | 12.5 | £47.16 | 5 days | |
| BAER-B3533 | M16 | 2 | 18.6 | 37 | 112 | 14 | £63.42 | 5 days |
No products match your filters.


