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Carmex Threading Tap - Spiral Flute - UNF Supercut Tap - Powder Metal - 1/2 x 20
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Description
Carmex Threading Taps are precision tools built for professionals who demand clean, accurate internal threads in UNF applications. This Spiral Flute, UNF Supercut tap is engineered for reliability in demanding materials and high-speed threading operations.
- Thread Size: 1/2 x 20 UNF—designed for fine, high-precision Unified National Fine threads.
- Flute Style: Spiral flute provides efficient chip evacuation, reducing clogging and improving cutting action.
- Material: Powder metal construction delivers durable performance and wear resistance in challenging materials.
- Type: UNF Supercut design optimized for clean, consistent thread formation at higher speeds.
- Intended Use: Ideal for applications requiring precise internal threads in UNF specifications, from automotive to general metalworking.
This tap supports smoother operation and longer tool life, thanks to its robust powder metal body and spiral-flute geometry that effectively clears chips. It’s a dependable choice for machinists tackling tough materials or tight tolerances, ensuring each threaded hole is accurate and repeatable. Pair with appropriate cutting fluid and steady tapping routines to maximize performance and finish.
Part Numbers
- Protool Part Number
- CTSD374C050020UNF2BXXT3
- 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 - Powder Metal
View full collection →You are viewing CTSD374C050020UNF2BXXT3. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Overall Length | Flute Length | Square | Drill Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| CTSD371C448UNF2BXXT3 | No. 4 | 48 | 56 | 5 | 2.7 | 2.4 | £29.70 | 5 days | |
| CTSD371C544UNF2BXXT3 | No. 5 | 44 | 56 | 7 | 2.7 | 2.7 | £29.70 | 5 days | |
| CTSD371C640UNF2BXXT3 | No. 6 | 40 | 56 | 6 | 3 | 2.95 | £31.30 | 5 days | |
| CTSD371C836UNF2BXXT3 | No. 8 | 36 | 63 | 7 | 3.4 | 3.5 | £31.30 | 5 days | |
| CTSD371C1032UNF2BXXT3 | No. 10 | 32 | 70 | 8 | 4.9 | 4.1 | £33.98 | 5 days | |
| CTSD371C1228UNF2BXXT3 | No. 12 | 28 | 80 | 10 | 4.9 | 4.6 | £35.20 | 5 days | |
| CTSD371C025028UNF2BXXT3 | 1/4 | 28 | 80 | 10 | 5.5 | 5.5 | £42.28 | 5 days | |
| CTSD371C031224UNF2BXXT3 | 5/16 | 24 | 90 | 13 | 6 | 6.9 | £42.28 | 5 days | |
| CTSD371C037524UNF2BXXT3 | 3/8 | 24 | 100 | 15 | 8 | 8.5 | £55.54 | 5 days | |
| CTSD374C043720UNF2BXXT3 | 7/16 | 20 | 100 | 15 | 6.2 | 9.9 | £72.22 | 5 days | |
| CTSD374C050020UNF2BXXT3 Viewing | 1/2 | 20 | 100 | 15 | 7 | 11.5 | £97.24 | 5 days | |
| CTSD374C056218UNF2BXXT3 | 9/16 | 18 | 100 | 15 | 9 | 12.9 | £115.46 | 5 days | |
| CTSD374C062518UNF2BXXT3 | 5/8 | 18 | 100 | 15 | 9 | 14.5 | £115.46 | 5 days |
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