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Baer Heli Coil Tap - Wire Thread Insert - Spiral Point Tap (STI) - Metric - M14 x 1.25
| Thread Form | Metric |
| Size | M14 |
| Pitch | 1.25 |
| Lead | Spiral Point Tap (STI) |
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Description

The Baer Heli Coil Tap is a purpose-built tool designed to cut precise internal threads that accept wire thread inserts. Specifically engineered for spiral coil (STI) installations, this tap creates the robust receiving threads you need when repairing stripped or damaged holes. With its metric form, this tap locks into place for consistent engagement, delivering reliable results in a range of materials and applications.
- Precisely oversized for insert compatibility. The tap is designed to generate threads that match the outer profile of standard wire thread inserts, ensuring a snug, secure seating every time.
- Spiral Point (gun nose) geometry. The cutting edges are positioned to push chips forward and keep debris out of the hole, making through-hole tapping smoother and reducing the risk of cross-threading.
- Metric reliability: M14 x 1.25 pitch. This specific size and pitch are common for automotive, machinery, and maintenance work, providing a dependable port for helicoil-type inserts.
- Single-tool solution for repair and reinforcement. Use this tap to restore damaged threads or create a durable core for a helicoil or similar wire insert, extending service life and load-bearing capacity.
- Versatile for tough environments. Ideal for repair in metal housings, engine components, transmission casings, and other critical assemblies where strong, repeatable threads matter.
Why choose this Baer Coil Tap? It’s built to support real-world repairs where standard taps fall short. The STI-oriented design focuses on producing clean, accurately sized threads that align perfectly with the insert you’re seating, minimizing rework and downtime. For technicians, machinists, and hobbyists who demand repeatable outcomes, this tap offers dependable performance that translates to fewer failures and longer-lasting fixes.
Practical use cases:
- Repairing stripped M14 x 1.25 threaded holes in engine blocks, cylinder heads, or transmission housings.
- Preparing through-holes in aluminum or steel brackets that will receive helicoil-type wire inserts for heightened durability.
- Restoring critical threads in chassis components where vibration resistance and restoring torque are essential.
Tips for best results:
- Follow the insert manufacturer’s guidance for hole size and drill depth to ensure proper seating of the wire insert.
- Use appropriate cutting oil or spray to reduce friction and extend tap life during tapping.
- Keep the tap aligned with the hole to avoid cross-threading and errant cuts, especially in deeper or harder materials.
- Deburr the hole after drilling and before tapping to prevent chip interference and ensure clean thread engagement.
Part Numbers
- Protool Part Number
- BAER-B3529
- 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-B3529. 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 | 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 Viewing | 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 |
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