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Carmex Threading Tap - Spiral Flute - UNF Supercut Tap - HSS-E - No. 12 x 28
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Description
The Carmex Spiral Flute UNF Supercut Threading Tap is built for precision fine-threading in UNF applications, delivering dependable performance for machinists and metalworkers. Crafted from HSS‑E (high‑speed steel with cobalt), this tap pairs durability with heat resistance to handle challenging materials and high‑speed threading tasks.
- Thread Type: Unified National Fine (UNF), 28 threads per inch (No. 12 size) for accurate, compact threading.
- Size & Pitch: No. 12 with 28 TPI to match common fine-thread specifications in metalworking projects.
- Material: HSS‑E (high‑speed steel with cobalt) for enhanced wear resistance and longevity under heat.
- Flute Design: Spiral flute facilitates efficient chip evacuation, reducing snagging and chatter during tapping.
- Overall Length: 28 mm, offering a compact form suitable for depth‑limited holes and tight workpieces.
- Application: Ideal for hard materials and high‑speed threading where clean, consistent threads are critical.
With these attributes, the tap delivers clean, accurate UNF threads, improved heat resistance for repeat tapping sessions, and reliable performance in demanding workshop environments. Whether you're assembling precision components, servicing fine‑thread fasteners, or tackling automotive and machinery projects, this Carmex UNF Supercut tap helps you achieve dependable results with fewer passes and less tool wear.
Part Numbers
- Protool Part Number
- CTSD371C1228UNF2BXT5
- 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 Flute - UNF Supercut Tap - HSS-E
View full collection →You are viewing CTSD371C1228UNF2BXT5. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Flute Length | Square | Drill Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| CTSD371C640UNF2BXT5 | No. 6 | 40 | 56 | 6 | 3 | 2.95 | £20.42 | 5 days | |
| CTSD371C836UNF2BXT5 | No. 8 | 36 | 63 | 7 | 3.4 | 3.5 | £22.22 | 5 days | |
| CTSD371C1032UNF2BXT5 | No. 10 | 32 | 70 | 8 | 4.9 | 4.1 | £22.22 | 5 days | |
| CTSD371C1228UNF2BXT5 Viewing | No. 12 | 28 | 80 | 10 | 4.9 | 4.6 | £23.00 | 5 days | |
| CTSD371C025028UNF2BXT5 | 1/4 | 28 | 80 | 10 | 5.5 | 5.5 | £27.66 | 5 days | |
| CTSD371C031224UNF2BXT5 | 5/16 | 24 | 90 | 13 | 6 | 6.9 | £27.66 | 5 days | |
| CTSD371C037524UNF2BXT5 | 3/8 | 24 | 100 | 15 | 8 | 8.5 | £36.32 | 5 days | |
| CTSD374C043720UNF2BXT5 | 7/16 | 20 | 100 | 15 | 6.2 | 9.9 | £47.22 | 5 days | |
| CTSD374C050020UNF2BXT5 | 1/12 | 20 | 100 | 15 | 7 | 11.5 | £63.58 | 5 days | |
| CTSD374C056218UNF2BXT5 | 9/16 | 18 | 100 | 15 | 9 | 12.9 | £74.48 | 5 days | |
| CTSD374C062518UNF2BXT5 | 5/8 | 18 | 100 | 15 | 9 | 14.5 | £74.48 | 5 days | |
| CTSD374C075016UNF2BXT5 | 3/4 | 16 | 110 | 17 | 11 | 17.5 | £110.52 | 5 days | |
| CTSD374C087514UNF2BXT5 | 7/8 | 14 | 125 | 17 | 14.5 | 20.4 | £151.84 | 5 days |
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