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Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - 1/2 x 13
SKU:BAER-B3111
Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - 1/2 x 13 The Heli Coil Tap you need for impeccable thread repairs and reinforcements. Crafted for durability and designed to d...
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Material Compatibility
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Specifications at a glance
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| Thread Form | UNC |
| Size | 1/2 |
| Pitch | 13 |
| Lead | Bottoming Tap (STI) |
£17.18
Prices shown ex. VAT
5 days estimated lead time
— subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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Description
Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - UNC - 1/2 x 13 The Heli Coil Tap you need for impeccable thread repairs and reinforcements. Crafted for durability and designed to deliver consistent, clean cuts, this tap is purpose-built to create strong host threads that accept Helicoil/wire thread inserts with confidence. When a hole must withstand load, vibration, or repeated assembly, this tool ensures the thread form is precise from first cut to the last.
- Full-depth threading with a bottoming chamfer: engineered to reach the bottom of blind holes, ensuring a complete seat for the wire thread insert and maximizing pull-out resistance. This is the hallmark of a true bottoming tap designed for reliable, repeatable results.
- 1/2-13 UNC specification: precisely matched to standard Unified National Coarse threads, enabling quick, accurate tapping for common fastener sizes used in machinery, automotive components, and structural assemblies.
- Durable construction for repeated use: built to withstand the rigors of professional shop work, with heat-treated materials and robust geometry that resist wear and maintain sharpness over time.
- 4-flute design for efficient cutting: optimized to slice through metal cleanly, promoting smooth chip evacuation and extended tool life in stainless, steel, or aluminum applications.
- Compatibility with Helicoil-style inserts: this tap is part of the system that creates a ready seat for wire thread inserts, delivering reinforced threads that resist stripping in high-stress environments.
- Repairing stripped threads in critical holes becomes predictable and repeatable, reducing downtime and the need for costly replacements.
- When you know the fastener will see repeated installation and removal, seating a Helicoil insert with a proper bottoming tap ensures the threaded path stays true and strong.
- In maintenance settings or production environments, you can trust consistent thread depth and alignment across multiple holes, improving fixture reliability and assembly quality.
- machinists, precision technicians, and maintenance professionals who work with dissimilar metals or need durable threaded repairs
- shops performing equipment restoration, automotive repairs, or machinery service that rely on reliable, long-lasting threads
- Pre-drill to the correct pilot size for the UNC 1/2 x 13 thread to ensure clean cutting and accurate thread formation.
- Apply a light cutting oil or lubricant to reduce friction and extend tool life during tapping.
- Align the tap carefully and back off slightly if you feel binding, then resume to maintain true thread alignment.
- Pair with a Helicoil-style wire insert for reinforced threads in high-load or high-vibration scenarios.
Part Numbers
- Protool Part Number
- BAER-B3111
- Brand
- BAER
- Category
- Heli Coil Tap
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Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
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.
Ask our technical team about this tool
Full Range: Baer Heli Coil Taps - Wire Thread Insert - Bottoming Tap (STI) - UNC
View full collection →You are viewing BAER-B3111. 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 | 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 Viewing | 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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