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Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - No. 12 x 24
| Thread Form | UNC |
| Size | No. 12 |
| Pitch | 24 |
| Lead | Bottoming Tap (STI) |
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Description
The Baer Heli Coil Tap No. 12 x 24 UNC is built for professionals who demand dependable, long-lasting thread repair and reinforcement. This bottoming tap (STI) is purposefully engineered to pair with Heli-Coil wire thread inserts, delivering clean, precise threads that restore original strength in a variety of materials and applications.
Why this tap stands out
- Bottoming geometry for complete engagement—designed to cut threads all the way to the bottom of blind holes, ensuring full-depth threads and reliable insert seating.
- UNC No. 12 x 24 threading—a common, widely used size in automotive, machinery, and industrial equipment, making it a go-to choice for repairs and reinforcements.
- HSSG-grade construction—crafted from durable high-speed steel with a ground finish to resist wear, stay sharp longer, and deliver consistent results, even on tougher substrates.
- Optimized for insert installations—taps are tuned to create threads that align perfectly with Heli-Coil wires, promoting clean seating and strong, repeatable performance.
Ideal use scenarios
- Automotive repairs where threaded holes have worn or stripped, such as engine blocks, cylinder heads, and transmission housings.
- Industrial equipment and machinery that require durable, reliable thread repairs to prevent future failures.
- DIY and professional shop environments where quick, repeatable thread restoration is essential for productivity.
Practical guidance for best results
- Use a quality cutting oil to reduce friction, extend tool life, and achieve smoother thread formation.
- Align the tap carefully with the hole to maintain true thread pitch and prevent cross-threading.
- Turn steadily clockwise until full depth is reached, then back off slightly to relieve pressure before continuing insert installation.
- Inspect the repaired hole after tapping and before inserting the coil to ensure clean, burr-free threads.
The Baer Heli Coil Tap is a precise, durable solution for restoring thread integrity and extending the life of critical fastener holes. When you need dependable, repeatable results with Heli-Coil inserts, this bottoming tap delivers the performance you rely on in demanding repair work.
Part Numbers
- Protool Part Number
- BAER-B3106
- 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-B3106. 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 | 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 Viewing | 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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