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Baer Heli Coil Tap - Wire Thread Insert - Spiral Flute Tap (STI) - Metric - M8 x 1.25
| Thread Form | Metric |
| Size | M8 |
| Pitch | 1.25 |
| Lead | Spiral Flute Tap (STI) |
| Thread Direction | Right Hand |
| Tolerance | 4H |
Learn more about Klarna
The Baer Heli Coil Tap is a precision spiral flute tapping tool designed for flawless thread repair and reinforcement using wire thread inserts. Engineered for metric applications, this model delivers an exact M8 x 1.25 thread every time, creating clean, true threads that integrate seamlessly with Heli-Coil style inserts.
Why this tap stands out:
- Spiral flute design moves chips efficiently for smoother cutting, reduced heat, and longer tool life in dense materials.
- High-speed steel construction provides durability and wear resistance essential for repeated threading on metal surfaces.
- Metric precision (M8 x 1.25) ensures compatibility with standard wire thread inserts and common repair kits, helping you restore original strength quickly.
- STI compatibility Tailored for inserting wire thread inserts with confidence, minimizing thread damage and eliminating guesswork during repairs.
- Consistent thread quality supports reliable insert engagement, reducing the need for rework in critical assemblies.
Who benefits from the Baer Heli Coil Tap? workshop professionals, automotive technicians, and anyone who regularly returns stripped or damaged threads to original specification. It shines in repair scenarios where a strong, vibration-resistant thread is required—think engine blocks, housings, bracketry, and metal housings where service life matters as much as precision.
Practical tips for best results:
- Use a suitable cutting fluid to minimize friction and heat buildup during tapping.
- Align the tap carefully with the hole to maintain true thread geometry and prevent cross-threading.
- Tap with medium, steady pressure and reverse gently to break chips without pulling the material.
- Clean the hole after tapping and before inserting the coil to ensure optimal engagement and longevity.
From hobbyist repairs to professional rebuilds, the Baer Heli Coil Tap delivers reliable performance when you need to restore threaded holes with inserts. The included branding and quality craftsmanship are proudly represented by the logo below.

| Thread Form | Metric |
| Size | M8 |
| Pitch | 1.25 |
| Lead | Spiral Flute Tap (STI) |
| Thread Direction | Right Hand |
| Tolerance | 4H |
| Tap Diameter (D1) | 9.6 |
| Flute Length (L2) | 24 |
| Overall Length (L1) | 80 |
| Shank Diameter (D2) | 10 |
| Square Drive | 8 |
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 Tap - Wire Thread Insert - Spiral Point Tap (STI) - Metric
View full collection →You are viewing BAER-B3711. 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-B3705 | M3 | 0.5 | 3.6 | 13 | 53 | 4 | £17.88 | 5 days | |
| BAER-B3706 | M3.5 | 0.6 | 4.3 | 13 | 53 | 4.5 | £25.22 | 5 days | |
| BAER-B3707 | M4 | 0.7 | 4.9 | 16 | 58 | 5 | £19.83 | In Stock | |
| BAER-B3708 | M5 | 0.8 | 6 | 19 | 66 | 6.3 | £19.83 | 5 days | |
| BAER-B3709 | M6 | 1 | 7.3 | 22 | 72 | 8 | £19.83 | 5 days | |
| BAER-B3710 | M7 | 1 | 8.3 | 22 | 72 | 9 | £26.18 | 5 days | |
| BAER-B3711 Viewing | M8 | 1.25 | 9.6 | 24 | 80 | 10 | £26.18 | 5 days | |
| BAER-B3712 | M8 | 1 | 9.3 | 24 | 80 | 10 | £31.70 | 5 days | |
| BAER-B3715 | M10 | 1.5 | 11.9 | 29 | 89 | 9 | £30.56 | 5 days | |
| BAER-B3717 | M10 | 1 | 11.3 | 25 | 85 | 8 | £38.23 | 5 days | |
| BAER-B3720 | M12 | 1.75 | 14.3 | 30 | 95 | 11.2 | £34.14 | 5 days | |
| BAER-B3721 | M12 | 1.5 | 14 | 30 | 95 | 11.2 | £48.44 | 5 days | |
| BAER-B3722 | M12 | 1.25 | 13.6 | 30 | 95 | 11.2 | £48.44 | 5 days | |
| BAER-B3727 | M14 | 2 | 16.6 | 32 | 102 | 12.5 | £63.42 | 5 days | |
| BAER-B3728 | M14 | 1.5 | 16 | 32 | 102 | 12.5 | £56.92 | 5 days | |
| BAER-B3729 | M14 | 1.25 | 15.6 | 32 | 102 | 12.5 | £48.44 | 5 days | |
| BAER-B3733 | M16 | 2 | 18.6 | 37 | 112 | 14 | £69.57 | 5 days |
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