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Baer Heli Coil Tap - Wire Thread Insert - Spiral Point Tap (STI) - Metric - M5 x 0.8
| Thread Form | Metric |
| Size | M5 |
| Pitch | 0.8 |
| Lead | Spiral Point Tap (STI) |
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Description
Baer Heli Coil Tap - Wire Thread Insert - Spiral Point Tap (STI) - Metric - M5 x 0.8 is the precision tool you reach for when thread integrity is non-negotiable. Designed to create clean, accurate threads that accept wire thread inserts with ease, this STI tap is built to endure demanding sessions and deliver consistent results across a range of materials and applications.

Why this BaerCoil STI tap stands out
- Oversized design for through-holes. Specifically engineered to compensate for insert geometry, ensuring the internal thread formed will snugly accept Helicoil or similar wire inserts. (cite: turn0search8)
- Spiral Point (STI) geometry. The spiral groove and point work together to evacuate chips forward, reducing clogging and promoting a smoother, more reliable thread cut for inserts. (cite: turn0search8)
- HSSE construction for durability. Built from high-speed steel variants designed for long life in repetitive tapping tasks common with insert installation. (cite: turn0search0)
- Compatibility with common wire insert systems. This tap is purpose-built to create threads that accept Helicoil, Recoil, and other standard coil inserts, simplifying inventory and workflow. (cite: turn0search1)
- Precise metric sizing: M5 x 0.8. The tap handles the standard M5 thread pitch, aligning perfectly with widely used insert systems and repairs. (cite: turn0search8)
This tool is ideal for technicians and shop environments where damaged, stripped, or worn threads need a durable, repeatable repair solution. By outlining clean, robust threads that accept reliable coil inserts, the BaerCoil Heli Coil Tap helps you restore original strength and load-bearing capability in critical components—from housings and brackets to small aluminum blocks and beyond.
In practice, you pair this STI tap with a wire thread insert system to rebuild damaged holes—first drilling or reaming to the insert’s required diameter, then tapping with the M5 x 0.8 STI tap, and finally driving in the insert with its installation tool. The result is a repair that behaves like a factory-threaded hole, delivering improved pull-out resistance and long-term durability. (cite: turn0search8)
Order with confidence knowing BaerCoil’s taps are purpose-built for insert applications, offering consistent geometry, reliable chip evacuation, and compatibility with standard insert brands, so you can complete repairs quickly and return components to service with minimal downtime. (cite: turn0search0–turn0search4–turn0search12)
Part Numbers
- Protool Part Number
- BAER-B3508
- 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-B3508. 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 Viewing | 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 | 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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