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Carmex Threading Tap - Spiral Flute - UNF Supercut Tap - HSS-E - 5/16 x 24
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Description
The Carmex Threading Tap with Spiral Flute in UNF Supercut geometry is a precision tapping tool designed for professionals who work with 5/16-24 UNF threads. Built from cobalt-containing high-speed steel, it delivers reliable performance in challenging materials and high-speed threading operations.
- Thread type and size: Spiral-flute UNF Supercut tap for 5/16-24 threads, optimized for accurate threading in tight holes.
- Material: HSS‑E (high-speed steel with cobalt) for enhanced heat resistance and longer tool life in tough cutting conditions.
- Flute design: Spiral flutes provide efficient chip removal, reducing clogging and enabling smooth cutting action.
- Cutting geometry: Supercut geometry supports stable cutting and true thread formation even in demanding materials.
- Drive/shank: Square drive end for secure engagement with tapping wrenches and compatible tools.
Benefits: Expect clean, consistent UNF threads with improved reliability when working in harder metals or high-speed environments. The cobalt-infused HSS-E construction resists heat buildup, extending tap life and reducing downtime. Efficient chip evacuation from the spiral flutes minimizes chatter and thread distortion, making this tap well suited for automotive fittings, precision instrumentation, and other applications where precise 5/16-24 UNF threads matter.
Part Numbers
- Protool Part Number
- CTSD371C031224UNF2BXT5
- 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 CTSD371C031224UNF2BXT5. 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 | 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 Viewing | 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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