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Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - Metric - M22 x 2
| Thread Form | Metric |
| Size | M22 |
| Pitch | 2 |
| Lead | Bottoming Tap (STI) |
| Thread Direction | Right Hand |
| Tolerance | 4H |
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Baer Heli Coil Tap — Bottoming Tap (STI) for Metric M22 x 2 thread repairs and reinforcements. When paired with Heli-Coil wire thread inserts, this precision tool restores damaged holes with rock-solid threads, delivering reliable performance in automotive, industrial, and machine-shop work.

Why this tap matters
Designed specifically for Heli-Coil inserts, the STI bottoming tap cuts clean, accurate M22 x 2 threads all the way to the bottom of the hole. This full-depth thread form ensures the insert seats squarely and remains secure under vibration and load. In practice, that means fewer strip-outs, longer service life for critical components, and easier future maintenance.
Key features that translate to real-world results
- Bottoming geometry for complete depth: engineered to reach the full thread length in blind holes, so your Heli-Coil insert seats properly and performs as intended.
- STI-optimized tapping for inserts: part numbers and tooling align with Helicoil STI systems, making alignment predictable and installation smooth.
- Metric precision, M22 x 2: sized for common high-strength applications where larger repair threads are required. (M22 x 2 is a standard size you’ll encounter in heavy machinery and automotive components.)
- Manufactured for durability: built from tough, high-speed steel formulations to resist wear and provide consistent cuts across multiple repairs. (Supports the long-term reliability you need in demanding environments.)
- Cleaner threads, quicker repairs: refined flute geometry minimizes burrs and chatter, helping you finish faster with professional-grade results.
Who should consider the Baer Heli Coil Tap
This tap is ideal for machinists, automotive technicians, and maintenance crews who regularly restore stripped or damaged threads in metals where insert reinforcements are preferred over oversized, costly replacements. It’s especially valuable when you need to:
- Repair stripped M22 x 2 holes in aluminum blocks, engine components, or chassis parts.
- Prepare holes for reliable Heli-Coil inserts that restore original strength and torque capabilities.
- Perform consistent, repeatable threading in production or repair environments where downtime matters.
Practical tips for best results
- Use appropriate cutting fluid and steady, straight torque to maintain alignment with the hole axis.
- Correct drill hole size and deburr before tapping to prevent threading defects.
- Follow with a Heli-Coil insert installation for a professional repair that restores original performance.
- Store taps in a clean, dry environment to preserve edge geometry and tool life.
For reference, industry guides and supplier catalogs discuss STI taps and M22 x 2 bottoming options designed for wire insert systems, underscoring the compatibility and precision you get with this tooling standard. This reinforces why a dedicated Heli-Coil STI bottoming tap is a smart, long-term choice for reliable thread restoration.
| Thread Form | Metric |
| Size | M22 |
| Pitch | 2 |
| Lead | Bottoming Tap (STI) |
| Thread Direction | Right Hand |
| Tolerance | 4H |
| Tap Diameter (D1) | 24.6 |
| Flute Length (L2) | 35 |
| Overall Length (L1) | 120 |
| Shank Diameter (D2) | 18 |
| Square Drive | 14 |
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 - Bottoming Tap (STI) - Metric
View full collection →You are viewing BAER-B3042-1. 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-B3001-1 | M2 | 0.4 | 2.5 | 9.5 | 44.5 | 2.8 | £11.28 | 5 days | |
| BAER-B3003-1 | M2.5 | 0.45 | 3.1 | 11 | 48 | 3.15 | £11.28 | 5 days | |
| BAER-B3005-1 | M3 | 0.5 | 3.6 | 13 | 53 | 4 | £9.92 | 5 days | |
| BAER-B3006-1 | M3.5 | 0.6 | 4.3 | 13 | 53 | 4.5 | £10.84 | 5 days | |
| BAER-B3007-1 | M4 | 0.7 | 4.9 | 16 | 58 | 5 | £9.92 | 5 days | |
| BAER-B3008-1 | M5 | 0.8 | 6 | 19 | 66 | 6.3 | £9.92 | 5 days | |
| BAER-B3009-1 | M6 | 1 | 7.3 | 22 | 72 | 8 | £9.92 | 5 days | |
| BAER-B3010-1 | M7 | 1 | 8.3 | 22 | 72 | 9 | £12.27 | In Stock | |
| BAER-B3011-1 | M8 | 1.25 | 9.6 | 24 | 80 | 10 | £12.27 | 5 days | |
| BAER-B3012-1 | M8 | 1 | 9.3 | 24 | 80 | 10 | £12.27 | 5 days | |
| BAER-B3013-1 | M9 | 1.25 | 10.6 | 25 | 85 | 8 | £15.19 | 5 days | |
| BAER-B3015-1 | M10 | 1.5 | 11.9 | 29 | 89 | 9 | £15.19 | 5 days | |
| BAER-B3016-1 | M10 | 1.25 | 11.6 | 25 | 85 | 8 | £15.19 | 5 days | |
| BAER-B3017-1 | M10 | 1 | 11.3 | 25 | 85 | 8 | £15.19 | 5 days | |
| BAER-B3018-1 | M11 | 1.5 | 12.9 | 29 | 89 | 9 | £17.07 | 5 days | |
| BAER-B3020-1 | M12 | 1.75 | 14.3 | 30 | 95 | 11.2 | £17.07 | 5 days | |
| BAER-B3021-1 | M12 | 1.5 | 14 | 30 | 95 | 11.2 | £20.83 | 5 days | |
| BAER-B3022-1 | M12 | 1.25 | 13.6 | 30 | 95 | 11.2 | £20.83 | 5 days | |
| BAER-B3023-1 | M12 | 1 | 13.3 | 30 | 95 | 11.2 | £21.97 | 5 days | |
| BAER-B3027-1 | M14 | 2 | 16.6 | 32 | 102 | 12.5 | £23.74 | 5 days | |
| BAER-B3028-1 | M14 | 1.5 | 16 | 32 | 102 | 12.5 | £23.74 | 5 days | |
| BAER-B3029-1 | M14 | 1.25 | 15.6 | 32 | 102 | 12.5 | £23.74 | 5 days | |
| BAER-B3030-1 | M14 | 1 | 15.3 | 32 | 102 | 12.5 | £23.74 | 5 days | |
| BAER-B3033-1 | M16 | 2 | 18.6 | 37 | 112 | 14 | £29.01 | 5 days | |
| BAER-B3034-1 | M16 | 1.5 | 18 | 29 | 104 | 14 | £29.01 | 5 days | |
| BAER-B3035-1 | M18 | 2.5 | 21.3 | 38 | 118 | 16 | £41.30 | 5 days | |
| BAER-B3036-1 | M18 | 2 | 20.6 | 29 | 104 | 14 | £41.30 | 5 days | |
| BAER-B3037-1 | M18 | 1.5 | 20 | 29 | 104 | 14 | £41.30 | 5 days | |
| BAER-B3038-1 | M20 | 2.5 | 23.3 | 38 | 118 | 16 | £45.87 | 5 days | |
| BAER-B3039-1 | M20 | 2 | 22.6 | 33 | 113 | 16 | £45.87 | 5 days | |
| BAER-B3040-1 | M20 | 1.5 | 22 | 33 | 113 | 16 | £45.87 | 5 days | |
| BAER-B3041-1 | M22 | 2.5 | 25.3 | 45 | 130 | 18 | £52.83 | 5 days | |
| BAER-B3042-1 Viewing | M22 | 2 | 24.6 | 35 | 120 | 18 | £52.83 | 5 days | |
| BAER-B3043-1 | M22 | 1.5 | 24 | 35 | 120 | 18 | £52.83 | 5 days | |
| BAER-B3044-1 | M24 | 3 | 27.9 | 48 | 138 | 20 | £62.57 | 5 days | |
| BAER-B3045-1 | M24 | 2 | 26.6 | 37 | 127 | 20 | £62.57 | 5 days | |
| BAER-B3046-1 | M24 | 1.5 | 26 | 35 | 120 | 18 | £62.57 | 5 days | |
| BAER-B3049 | M26 | 1.5 | 28 | 37 | 127 | 20 | £113.67 | 5 days | |
| BAER-B3050 | M27 | 3 | 30.9 | 51 | 151 | 22.4 | £113.67 | 5 days | |
| BAER-B3051 | M27 | 2 | 29.6 | 37 | 127 | 20 | £113.67 | 5 days | |
| BAER-B3052 | M27 | 1.5 | 29 | 37 | 127 | 20 | £113.67 | 5 days | |
| BAER-B3053 | M28 | 1.5 | 30 | 37 | 127 | 20 | £113.67 | 5 days | |
| BAER-B3054-1 | M30 | 3.5 | 34.6 | 57 | 162 | 25 | £149.14 | 5 days | |
| BAER-B3055 | M30 | 2 | 32.6 | 37 | 137 | 22.4 | £149.14 | 5 days | |
| BAER-B3056 | M30 | 1.5 | 32 | 37 | 137 | 22.4 | £149.14 | 5 days | |
| BAER-B3057 | M33 | 3.5 | 37.6 | 57 | 162 | 25 | £154.72 | 5 days | |
| BAER-B3058 | M33 | 2 | 35.6 | 37 | 144 | 25 | £154.72 | 5 days | |
| BAER-B3060 | M36 | 4 | 41.2 | 60 | 170 | 28 | £172.46 | 5 days | |
| BAER-B3061 | M36 | 3 | 39.9 | 60 | 170 | 28 | £172.46 | 5 days | |
| BAER-B3062 | M36 | 2 | 38.6 | 39 | 150 | 28 | £172.46 | 5 days | |
| BAER-B3063 | M36 | 1.5 | 38 | 39 | 150 | 28 | £172.46 | 5 days | |
| BAER-B3064-1 | M39 | 4 | 44.2 | 67 | 187 | 31.5 | £264.70 | 5 days | |
| BAER-B3065-1 | M39 | 3 | 42.9 | 39 | 149 | 28 | £225.50 | 5 days |
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