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Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - BSW - 1/4 x 20
| Thread Form | BSW |
| Size | 1/4 |
| Pitch | 20 |
| Lead | Bottoming Tap (STI) |
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Description
When thread integrity matters, the Baer Heli Coil Tap is the precision tool you rely on for flawless repairs and steadfast reinforcements. Built to work hand in hand with wire thread inserts, this Bottoming Tap (STI) in 1/4 x 20 BSW delivers clean, true threads that keep your inserts seated squarely and your components performing under load.

Key advantages of the Baer Heli Coil Tap:
- Bottoming tap design ensures full-depth threads, enabling precise seating of Heli-Coil wire thread inserts even in blind holes.
- Specifically sized for 1/4 x 20 BSW thread systems, making it a natural fit for common repair and reinforcement tasks across automotive, machinery, and equipment.
- Durable HSS ground body resists wear and maintains sharp cutting edges through repeated use, delivering consistent results over time.
- Engineered to pair perfectly with Heli-Coil inserts, providing the correct geometry for secure, reliable thread reinforcement and long-term pull-out resistance.
- Professional-grade tool designed to reduce rework and extend the life of critical threaded holes in a range of materials.
How to get the best results:
- Use appropriate cutting fluid and ensure the tap is perfectly perpendicular to the workpiece to avoid cross-threading.
- Begin with a light touch and progressively advance to full depth for a clean, accurate thread profile.
- Clear debris and check thread engagement after tapping before seating the insert to guarantee a stable, load-bearing repair.
For technicians and shops that demand durable, repeatable thread repairs, the Baer Heli Coil Tap provides the exact tool you need to install and seat wire thread inserts confidently. It’s the reliable choice for creating strong, service-ready threads in a compact, dependable package.
Part Numbers
- Protool Part Number
- BAER-B3203
- 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 - Bottoming Tap (STI) - BSW
View full collection →You are viewing BAER-B3203. 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-B3201 | 1/8 | 40 | 3.9 | 13 | 53 | 4 | £13.94 | 5 days | |
| BAER-B3202 | 3/16 | 24 | 6 | 19 | 56 | 6.3 | £13.94 | 5 days | |
| BAER-B3203 Viewing | 1/4 | 20 | 7.8 | 22 | 72 | 8 | £13.94 | 5 days | |
| BAER-B3204 | 5/16 | 18 | 9.6 | 24 | 80 | 10 | £15.49 | 5 days | |
| BAER-B3205 | 3/8 | 16 | 11.4 | 25 | 85 | 8 | £16.04 | 5 days | |
| BAER-B3206 | 7/16 | 14 | 13.2 | 30 | 95 | 11.2 | £21.20 | 5 days | |
| BAER-B3207 | 1/2 | 12 | 15.2 | 32 | 102 | 12.5 | £24.30 | 5 days | |
| BAER-B3208 | 9/16 | 12 | 16.8 | 32 | 102 | 12.5 | £40.33 | 5 days | |
| BAER-B3209 | 5/8 | 11 | 18.6 | 37 | 112 | 14 | £49.85 | 5 days | |
| BAER-B3210 | 11/16 | 11 | 20.2 | 37 | 112 | 14 | £60.69 | 5 days | |
| BAER-B3211 | 3/4 | 10 | 22 | 38 | 118 | 16 | £60.69 | 5 days | |
| BAER-B3212 | 7/8 | 9 | 25.5 | 45 | 130 | 18 | £87.64 | 5 days | |
| BAER-B3213 | 1 | 8 | 29.1 | 48 | 138 | 20 | £87.64 | 5 days |
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