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Baer Heli Coil Tap - Wire Thread Insert - Spiral Flute Tap (STI) - Metric - M16 x 2
| Thread Form | Metric |
| Size | M16 |
| Pitch | 2 |
| Lead | Spiral Flute Tap (STI) |
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Description
Baer Heli Coil Tap – M16 x 2, Spiral Flute Tap (STI) designed to work in perfect harmony with Heli-Coil wire thread inserts. This precision tap cuts clean, true host threads that are ready to accept a durable coil insert, delivering trustworthy repairs and reinforced joints in metal components.
Engineered for reliability and long service life, this tap is crafted from premium high-speed steel (HSS) and finished to stand up to the demands of repeated use. The spiral-flute design enhances chip evacuation and reduces binding, making it ideal for through-holes and challenging materials alike. When paired with Heli-Coil inserts, it creates a hardened, wear-resistant thread that resists pulling and stripping under load.
What makes this tap essential
- Direct compatibility with Heli-Coil inserts – precisely cuts the matching host thread to ensure optimal insert engagement and strength.
- Spiral flute for efficient cutting – self-cleans as you drill, promoting deeper taps with less resistance and smoother operation.
- Metric M16 x 2 sizing – ideal for reinforcement and repairs in structural fastener areas where a robust, standardized thread matters.
- Durable construction – built from high-grade HSS with a finish designed to withstand frequent use in automotive, machinery, and manufacturing settings.
Practical use cases
- Repairing stripped or damaged threads in engine blocks, transmission housings, crankcases, and aluminum components where an insert is preferred for longevity.
- Creating reliable, serviceable threads in equipment housings and brackets that endure vibration and repeated assembly/disassembly.
- Reinforcing critical fastener locations in rebuilds or retrofits where replacing the entire component isn’t feasible.
How to get the best results
- Choose the correct drill size for your Heli-Coil insert kit to match the M16 x 2 thread.
- Use cutting fluid or light oil to reduce heat and extend tool life during tapping.
- Align the tap carefully with the hole axis and apply steady, even pressure while turning clockwise.
- After tapping, install the Heli-Coil insert according to the kit instructions to achieve a reinforced, durable thread ready for repeated use.
Care and storage: Keep the tap clean of chips, wipe with a dry cloth after use, and store in a protective case to prevent nicks and corrosion. Proper maintenance ensures the tool stays precise and dependable for future repairs.

Part Numbers
- Protool Part Number
- BAER-B3733
- 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 Tap - Wire Thread Insert - Spiral Point Tap (STI) - Metric
View full collection →You are viewing BAER-B3733. 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 | 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 Viewing | M16 | 2 | 18.6 | 37 | 112 | 14 | £69.57 | 5 days |
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