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Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - No. 8 x 32
| Thread Form | UNC |
| Size | No. 8 |
| Pitch | 32 |
| Lead | Bottoming Tap (STI) |
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Description

Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - No. 8 x 32
When you need clean, durable threads quickly, the Baer Heli Coil Tap is the sole tool that delivers reliable helicoil inserts without guesswork. Engineered for precision and built to last, this bottoming tap finishes the hole with the exact depth required for a secure No. 8 x 32 UNC helicoil installation, ensuring the thread repair stays strong under load.
Key features that matter in real-world use:
- Bottoming geometry for full-depth threads—reaches the deepest point of the hole so helicoil inserts seat properly and resist pull-out during use.
- High-speed steel (HSS) construction—designed to withstand repeated tapping in steel, aluminum, and other common workpiece materials, delivering consistent performance over time.
- UNC No. 8 x 32 compatibility—aligned with standard repair threads, making it a dependable choice for automotive, machinery, and fabrication projects.
- Helicoil-friendly tooling—creates the precise channel your wire thread insert needs to bite securely, restoring original strength without compromising surrounding material.
- Professional-grade reliability for shop and field work—a smart addition to any repair kit, ensuring quick, repeatable results whether you’re on the bench or in the field.
Practical use cases you’ll encounter:
- Repairing stripped mounting holes in engine blocks, cylinder heads, or transmission components where helicoil inserts are the proven fix for durable threads.
- Reinforcing critical brackets, housings, or fixtures that endure vibration or torque, restoring clamping force without sacrificing material integrity.
- Standard restoration projects where frequent assembly and disassembly require dependable, long-lasting threads.
Why this tap stands out in the world of thread repair tools:
- The combination of bottoming reach and precise pitch minimizes the risk of cross-threading, giving you predictable, repeatable thread quality each time.
- Designed specifically to work with helicoil inserts, it ensures optimal engagement and load distribution, so repairs endure through years of use.
- Versatile enough for professional workshops or serious DIY setups, it complements a complete helicoil repair system for fast, durable results.
Best practices for peak performance:
- Apply a light cutting lubricant to reduce heat and extend tool life during tapping.
- Maintain steady, perpendicular alignment to the workpiece to preserve thread integrity and avoid burrs.
- Inspect the hole size and follow helicoil insert specifications to guarantee a perfect match for No. 8 x 32 threads.
- Keep the tap clean and sharp; worn teeth or dull edges can compromise thread quality and helicoil seating.
Who should consider the Baer Heli Coil Tap? Machinists, automotive specialists, equipment technicians, and serious hobbyists who demand dependable, long-lasting thread repairs. If you’re restoring damaged holes or reinforcing critical mounting points, this bottoming tap is the precise, durable choice that helps you complete jobs with confidence. Pair it with your helicoil insert kit for a streamlined repair workflow that delivers professional-grade results, every time.
Part Numbers
- Protool Part Number
- BAER-B3104
- 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) - UNC
View full collection →You are viewing BAER-B3104. 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-B3100 | No. 2 | 56 | 2.8 | 10 | 48 | 3.15 | £14.97 | 5 days | |
| BAER-B3101 | No. 4 | 40 | 3.7 | 13 | 53 | 4 | £14.86 | 5 days | |
| BAER-B3102 | No. 5 | 40 | 4 | 13 | 53 | 4 | £14.86 | 5 days | |
| BAER-B3103 | No. 6 | 32 | 4.5 | 16 | 58 | 5 | £14.86 | 5 days | |
| BAER-B3104 Viewing | No. 8 | 32 | 5.2 | 17 | 62 | 5.6 | £14.86 | 5 days | |
| BAER-B3105 | No. 10 | 24 | 6.2 | 19 | 66 | 6.3 | £14.86 | 5 days | |
| BAER-B3106 | No. 12 | 24 | 6.9 | 19 | 66 | 7.1 | £14.86 | 5 days | |
| BAER-B3107 | 1/4 | 20 | 8 | 22 | 72 | 8 | £9.77 | 5 days | |
| BAER-B3108 | 5/16 | 18 | 9.8 | 24 | 80 | 10 | £10.84 | 5 days | |
| BAER-B3109 | 3/8 | 16 | 11.6 | 25 | 85 | 8 | £11.32 | 5 days | |
| BAER-B3110 | 7/16 | 14 | 13.5 | 30 | 95 | 11.2 | £15.01 | 5 days | |
| BAER-B3111 | 1/2 | 13 | 15.2 | 32 | 102 | 12.5 | £17.18 | 5 days | |
| BAER-B3112 | 9/16 | 12 | 17 | 37 | 112 | 14 | £28.80 | 5 days | |
| BAER-B3113 | 5/8 | 11 | 18.9 | 37 | 112 | 14 | £35.47 | 5 days | |
| BAER-B3114 | 3/4 | 10 | 22.4 | 38 | 118 | 16 | £43.07 | 5 days | |
| BAER-B3115 | 7/8 | 9 | 25.9 | 45 | 130 | 18 | £62.08 | 5 days | |
| BAER-B3116 | 1 | 8 | 29.5 | 48 | 138 | 20 | £62.08 | 5 days | |
| BAER-B3117 | 1.1/8 | 7 | 33.3 | 51 | 151 | 22.4 | £109.27 | 5 days | |
| BAER-B3118 | 1.1/4 | 7 | 36.5 | 57 | 162 | 25 | £131.14 | 5 days | |
| BAER-B3119 | 1.3/8 | 6 | 40.4 | 60 | 170 | 28 | £156.79 | 5 days | |
| BAER-B3120 | 1.1/2 | 6 | 43.6 | 67 | 187 | 31.5 | £210.03 | 5 days |
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