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Carmex Threading Tap - Spiral Point - UNC Supercut Tap - Powder Metal - 1/4 x 20
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Description
The Carmex Threading Tap is a spiral point, UNC threading tool crafted for precision in 1/4" x 20 UNC applications. Built for machinists and production shops, it delivers dependable performance in demanding materials and high-speed tapping tasks.
- Thread Type: Unified National Coarse (UNC) threads for robust engagement and broad fastener compatibility.
- Size: 1/4" diameter, 20 threads per inch (1/4-20 UNC) for common, versatile hole sizing.
- Geometry: Spiral Point design that pushes chips ahead of the tap to reduce clogging and improve finish.
- Material: Powder Metal construction offering a durable, wear-resistant tap suited for repeated use in tough materials.
- Cutting Geometry: Supercut profile optimized for efficient material removal and consistent thread formation from start to finish.
- Speed & Performance: Engineered for high-speed threading operations to boost productivity without sacrificing thread quality.
- Applications: Suitable for challenging metals and production environments where reliable UNC threads are required.
With its forward-chip evacuating spiral point and rugged powder metal body, this tap helps you achieve clean, accurate UNC threads quickly. The design minimizes chip buildup, reduces downtime, and supports durable performance across production runs. Whether you’re assembling automotive components, fabricating machinery, or finishing parts that rely on 1/4-20 UNC fasteners, this Carmex tap delivers dependable threading consistency, longer tool life, and a smoother threading process from pilot hole to final pass.
Part Numbers
- Protool Part Number
- CTPD371B025020UNC2BXXT3
- Brand
- Carmex
- Category
- Threading Tap
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: Carmex Threading Taps - Spiral Point - UNC Supercut Tap - Powder Metal
View full collection →You are viewing CTPD371B025020UNC2BXXT3. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Flute Length | Square | Drill Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| CTPD371B256UNC2BXXT3 | No. 2 | 56 | 45 | 10 | 2.1 | 1.85 | £35.02 | 5 days | |
| CTPD371B440UNC2BXXT3 | No. 4 | 40 | 56 | 5 | 2.7 | 2.35 | £26.74 | In Stock | |
| CTPD371B540UNC2BXXT3 | No. 5 | 40 | 56 | 7 | 2.7 | 2.65 | £26.74 | 5 days | |
| CTPD371B632UNC2BXXT3 | No. 6 | 32 | 56 | 6 | 3 | 2.85 | £28.10 | 5 days | |
| CTPD371B832UNC2BXXT3 | No. 8 | 32 | 63 | 7 | 3.4 | 3.5 | £30.60 | 5 days | |
| CTPD371B1024UNC2BXXT3 | No. 10 | 24 | 70 | 8 | 4.9 | 3.9 | £30.60 | 5 days | |
| CTPD371B1224UNC2BXXT3 | No. 12 | 24 | 80 | 10 | 4.9 | 4.5 | £31.66 | 5 days | |
| CTPD371B025020UNC2BXXT3 Viewing | 1/4 | 20 | 80 | 13 | 5.5 | 5.1 | £38.04 | 5 days | |
| CTPD371B031218UNC2BXXT3 | 5/16 | 18 | 90 | 13 | 6 | 6.6 | £38.04 | 5 days | |
| CTPD371B037516UNC2BXXT3 | 3/8 | 16 | 100 | 15 | 8 | 8 | £50.00 | 5 days | |
| CTPD376B043714UNC2BXXT3 | 7/16 | 14 | 100 | 15 | 6.2 | 9.4 | £65.00 | 5 days | |
| CTPD376B050013UNC2BXXT3 | 1/2 | 13 | 110 | 18 | 7 | 10.8 | £87.50 | 5 days | |
| CTPD376B056212UNC2BXXT3 | 9/16 | 12 | 110 | 20 | 9 | 12.2 | £87.50 | 5 days | |
| CTPD376B062511UNC2BXXT3 | 5/8 | 11 | 110 | 22 | 9 | 13.5 | £103.92 | 5 days |
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