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Carmex Threading Tap - Spiral Point - UNC Supercut Tap - HSS-E - 1/4 x 20
| Style | Spiral Point |
| Form | UNC |
| Size | 1/4 |
| Pitch | 20 |
| Tolerance | 2B |
| Standard | DIN 371 |
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Meet the Carmex Threading Tap, Spiral Point UNC Supercut Tap—a precision tapping solution built for professionals who need reliable UNC threading in demanding materials. Designed for high-speed machining, this tap combines toughness and accuracy to keep production moving.
- Thread size / type: 1/4" diameter, 20 TPI UNC (Unified National Coarse) for standard coarse-thread applications
- Pattern: Spiral Point (gun-style) geometry that aggressively starts threads and facilitates efficient chip evacuation
- Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance during tough tapping operations
- Design: UNC Supercut geometry engineered for durable cutting action and long tool life in challenging materials
- Chip control: Spiral point directs chips away from the cutting edge, reducing clogging and improving thread consistency
- Application suitability: Ideal for production and repair work where reliable UNC threading and fast cycle times are essential
The Carmex UNC Supercut tap is built to deliver precise, clean threads while standing up to the heat and wear of high-speed tapping. The cobalt-infused HSS-E composition provides lasting rigidity and edge retention, helping you achieve consistent results across tough materials. With its spiral point geometry, this tap reduces chatter and promotes smooth engagement, enabling accurate threading with fewer reworks. Whether you’re fabricating components or repairing assemblies, this tap offers dependable performance in standard UNC coarse-thread applications.
| Style | Spiral Point |
| Form | UNC |
| Size | 1/4 |
| Pitch | 20 |
| Tolerance | 2B |
| Standard | DIN 371 |
| Reach | 30 |
| Thread Direction | Right Hand |
| Substrate | HSS-E |
| Materials | Universal |
| Shank Diameter | 7 |
| Overall Length | 80 |
| Flute Length | 18 |
| Square | 5.5 |
| Drill Diameter | 5.1 |
| Finish | XT5 |
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 - HSS-E
View full collection →You are viewing CTPD371B025020UNC2BXT5. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Flute Length | Square | Drill Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| CTPD371B256UNC2BXT5 | No. 2 | 56 | 45 | 10 | 2.1 | 1.85 | £22.22 | 5 days | |
| CTPD371B440UNC2BXT5 | No. 4 | 40 | 56 | 10 | 2.7 | 2.35 | £19.34 | In Stock | |
| CTPD371B540UNC2BXT5 | No. 5 | 40 | 56 | 10 | 2.7 | 2.65 | £19.34 | 5 days | |
| CTPD371B832UNC2BXT5 | No. 8 | 32 | 63 | 12 | 3.4 | 3.5 | £21.34 | 5 days | |
| CTPD371B1024UNC2BXT5 | No. 10 | 24 | 70 | 14 | 4.9 | 3.9 | £21.34 | 5 days | |
| CTPD371B1224UNC2BXT5 | No. 12 | 24 | 80 | 18 | 4.9 | 4.5 | £22.12 | 5 days | |
| CTPD371B025020UNC2BXT5 Viewing | 1/4 | 20 | 80 | 18 | 5.5 | 5.1 | £26.50 | 5 days | |
| CTPD371B031218UNC2BXT5 | 5/16 | 18 | 90 | 20 | 6 | 6.6 | £26.50 | 5 days | |
| CTPD371B037516UNC2BXT5 | 3/8 | 16 | 100 | 20 | 8 | 8 | £34.80 | 5 days | |
| CTPD376B043714UNC2BXT5 | 7/16 | 14 | 100 | 22 | 6.2 | 9.4 | £45.28 | 5 days | |
| CTPD376B050013UNC2BXT5 | 1/2 | 13 | 110 | 24 | 7 | 10.8 | £60.94 | 5 days | |
| CTPD376B056212UNC2BXT5 | 9/16 | 12 | 110 | 25 | 9 | 12.2 | £60.94 | 5 days | |
| CTPD376B062511UNC2BXT5 | 5/8 | 11 | 110 | 32 | 9 | 13.5 | £69.06 | 5 days | |
| CTPD376B075010UNC2BXT5 | 3/4 | 10 | 125 | 32 | 11 | 16.5 | £102.64 | 5 days | |
| CTPD376B08759UNC2BXT5 | 7/8 | 9 | 140 | 32 | 14.5 | 19.5 | £138.30 | 5 days | |
| CTPD376B1-8UNC2BXT5 | 1 | 8 | 160 | 38 | 16 | 22.25 | £189.28 | 5 days |
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