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Somta Stub Drill - HSS-E Parabolic Flute TiAlN COATED - 12.5mm
| Drill Diameter | 12.50 |
| Flute Length | 51 |
| Overall Length | 102 |
| Substrate | HSS-E |
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Description
The Somta Stub Drill - HSS-E Parabolic Flute TiAlN Coated, 12.5 mm diameter, is a high-performance drill bit designed for demanding drilling tasks in metalworking. It’s built for engineers, machinists, tradespeople, and serious hobbyists who need reliable accuracy and clean holes in tough materials.
Crafted from HSS-E for exceptional hardness and heat resistance, and finished with a TiAlN coating for outstanding wear protection and lubricity, this stub-length drill delivers dependable rigidity and long life. The parabolic flute design ensures efficient chip evacuation, helping to minimize heat buildup and maintain cutting performance through extended drilling operations.
- Parabolic flute for efficient chip evacuation: Quickly carries chips away from the cutting edge to reduce heat, maintain cutting speed, and extend tool life during deep or demanding holes.
- HSS-E core with TiAlN coating: Combines a tough, heat-tolerant substrate with a wear-resistant, high-temperature coating for longer life, smoother operation, and better surface finish.
- Stub-length design for rigidity and accuracy: Short, stiff geometry minimizes deflection, delivering stable, precise holes with consistent size and less runout.
This combination translates to fewer tool changes, reduced rework, and predictable results across a range of metals and thicknesses. The Somta Stub Drill is a reliable choice for anyone needing repeatable hole quality, improved productivity, and confidence in their drilling performance.
Part Numbers
- Protool Part Number
- 1631250X
- Brand
- Somta
- Category
- Drill
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
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: Somta Stub Drill - HSS-E Parabolic Flute TiAlN COATED (163-X)
View full collection →You are viewing 1631250X. Click any other SKU to view its full details.
| Product SKU | Drill Diameter | Flute Length | Overall Length | Shank Diameter | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| 1630100X | 1.00 | 6 | 26 | 1 | £2.65 | In Stock | |
| 1630110X | 1.10 | 7 | 28 | 1.1 | £2.65 | In Stock | |
| 1630120X | 1.20 | 8 | 30 | 1.2 | £2.65 | In Stock | |
| 1630130X | 1.30 | 8 | 30 | 1.3 | £2.65 | In Stock | |
| 1630140X | 1.40 | 9 | 32 | 1.4 | £2.65 | In Stock | |
| 1630150X | 1.50 | 9 | 32 | 1.5 | £2.69 | In Stock | |
| 1630160X | 1.60 | 10 | 34 | 1.6 | £2.69 | In Stock | |
| 1630170X | 1.70 | 10 | 34 | 1.7 | £2.69 | In Stock | |
| 1630180X | 1.80 | 11 | 36 | 1.8 | £2.69 | In Stock | |
| 1630190X | 1.90 | 11 | 36 | 1.9 | £2.69 | In Stock | |
| 1630200X | 2.00 | 12 | 38 | 2 | £2.80 | 1-2 days | |
| 1630210X | 2.10 | 12 | 38 | 2.1 | £2.80 | In Stock | |
| 1630220X | 2.20 | 13 | 40 | 2.2 | £2.80 | In Stock | |
| 1630230X | 2.30 | 13 | 40 | 2.3 | £2.80 | In Stock | |
| 1630240X | 2.40 | 14 | 43 | 2.4 | £2.80 | 1-2 days | |
| 1630250X | 2.50 | 14 | 43 | 2.5 | £2.82 | 1-2 days | |
| 1630260X | 2.60 | 14 | 43 | 2.6 | £2.82 | In Stock | |
| 1630270X | 2.70 | 16 | 46 | 2.7 | £2.82 | 1-2 days | |
| 1630280X | 2.80 | 16 | 46 | 2.8 | £2.82 | 1-2 days | |
| 1630290X | 2.90 | 16 | 46 | 2.9 | £2.82 | 1-2 days | |
| 1630300X | 3.00 | 16 | 46 | 3 | £2.93 | In Stock | |
| 1630310X | 3.10 | 18 | 49 | 3.1 | £3.37 | In Stock | |
| 1630320X | 3.20 | 18 | 49 | 3.2 | £3.37 | In Stock | |
| 1630330X | 3.30 | 18 | 49 | 3.3 | £3.37 | 1-2 days | |
| 1630340X | 3.40 | 20 | 52 | 3.4 | £3.73 | In Stock | |
| 1630350X | 3.50 | 20 | 52 | 3.5 | £4.75 | In Stock | |
| 1630360X | 3.60 | 20 | 52 | 3.6 | £4.75 | In Stock | |
| 1630370X | 3.70 | 20 | 52 | 3.7 | £4.75 | In Stock | |
| 1630380X | 3.80 | 22 | 55 | 3.8 | £4.75 | In Stock | |
| 1630390X | 3.90 | 22 | 55 | 3.9 | £4.75 | In Stock | |
| 1630400X | 4.00 | 22 | 55 | 4 | £5.66 | In Stock | |
| 1630410X | 4.10 | 22 | 55 | 4.1 | £5.66 | In Stock | |
| 1630420X | 4.20 | 22 | 55 | 4.2 | £5.66 | 1-2 days | |
| 1630430X | 4.30 | 24 | 58 | 4.3 | £5.66 | In Stock | |
| 1630440X | 4.40 | 24 | 58 | 4.4 | £5.66 | In Stock | |
| 1630450X | 4.50 | 24 | 58 | 4.5 | £5.70 | In Stock | |
| 1630460X | 4.60 | 24 | 58 | 4.6 | £5.70 | In Stock | |
| 1630480X | 4.80 | 26 | 62 | 4.8 | £5.70 | In Stock | |
| 1630490X | 4.90 | 26 | 62 | 4.9 | £5.70 | In Stock | |
| 1630500X | 5.00 | 26 | 62 | 5 | £5.98 | 1-2 days | |
| 1630510X | 5.10 | 26 | 62 | 5.1 | £5.98 | In Stock | |
| 1630520X | 5.20 | 26 | 62 | 5.2 | £5.98 | In Stock | |
| 1630530X | 5.30 | 26 | 62 | 5.3 | £5.98 | In Stock | |
| 1630540X | 5.40 | 28 | 66 | 5.4 | £5.98 | In Stock | |
| 1630550X | 5.50 | 28 | 66 | 5.5 | £6.70 | In Stock | |
| 1630560X | 5.60 | 28 | 66 | 5.6 | £6.70 | In Stock | |
| 1630570X | 5.70 | 28 | 66 | 5.7 | £6.70 | In Stock | |
| 1630580X | 5.80 | 28 | 66 | 5.8 | £6.70 | In Stock | |
| 1630590X | 5.90 | 28 | 66 | 5.9 | £6.70 | In Stock | |
| 1630600X | 6.00 | 28 | 66 | 6 | £7.29 | In Stock | |
| 1630610X | 6.10 | 31 | 70 | 6.1 | £7.29 | In Stock | |
| 1630620X | 6.20 | 31 | 70 | 6.2 | £7.29 | In Stock | |
| 1630630X | 6.30 | 31 | 70 | 6.3 | £7.29 | In Stock | |
| 1630640X | 6.40 | 31 | 70 | 6.4 | £7.29 | In Stock | |
| 1630650X | 6.50 | 31 | 70 | 6.5 | £7.89 | In Stock | |
| 1630660X | 6.60 | 31 | 70 | 6.6 | £7.89 | In Stock | |
| 1630670X | 6.70 | 31 | 70 | 6.7 | £7.89 | In Stock | |
| 1630680X | 6.80 | 34 | 74 | 6.8 | £7.89 | In Stock | |
| 1630690X | 6.90 | 34 | 74 | 6.9 | £7.89 | In Stock | |
| 1630700X | 7.00 | 34 | 74 | 7 | £8.27 | In Stock | |
| 1630710X | 7.10 | 34 | 74 | 7.1 | £8.27 | In Stock | |
| 1630720X | 7.20 | 34 | 74 | 7.2 | £8.27 | In Stock | |
| 1630730X | 7.30 | 34 | 74 | 7.3 | £8.27 | In Stock | |
| 1630740X | 7.40 | 34 | 74 | 7.4 | £8.27 | In Stock | |
| 1630750X | 7.50 | 34 | 74 | 7.5 | £9.54 | In Stock | |
| 1630760X | 7.60 | 37 | 79 | 7.6 | £9.54 | In Stock | |
| 1630770X | 7.70 | 37 | 79 | 7.7 | £9.54 | In Stock | |
| 1630780X | 7.80 | 37 | 79 | 7.8 | £9.54 | In Stock | |
| 1630790X | 7.90 | 37 | 79 | 7.9 | £9.54 | In Stock | |
| 1630800X | 8.00 | 37 | 79 | 8 | £10.05 | In Stock | |
| 1630810X | 8.10 | 37 | 79 | 8.1 | £10.05 | In Stock | |
| 1630820X | 8.20 | 37 | 79 | 8.2 | £10.05 | In Stock | |
| 1630830X | 8.30 | 37 | 79 | 8.3 | £10.05 | In Stock | |
| 1630840X | 8.40 | 37 | 79 | 8.4 | £10.05 | In Stock | |
| 1630850X | 8.50 | 37 | 79 | 8.5 | £12.23 | 1-2 days | |
| 1630860X | 8.60 | 40 | 84 | 8.6 | £12.23 | In Stock | |
| 1630870X | 8.70 | 40 | 84 | 8.7 | £12.23 | In Stock | |
| 1630880X | 8.80 | 40 | 84 | 8.8 | £12.23 | In Stock | |
| 1630890X | 8.90 | 40 | 84 | 8.9 | £12.23 | In Stock | |
| 1630900X | 9.00 | 40 | 84 | 9 | £12.51 | In Stock | |
| 1630910X | 9.10 | 40 | 84 | 9.1 | £12.51 | In Stock | |
| 1630920X | 9.20 | 40 | 84 | 9.2 | £12.51 | In Stock | |
| 1630930X | 9.30 | 40 | 84 | 9.3 | £12.51 | In Stock | |
| 1630940X | 9.40 | 40 | 84 | 9.4 | £12.51 | In Stock | |
| 1630950X | 9.50 | 40 | 84 | 9.5 | £13.23 | In Stock | |
| 1630960X | 9.60 | 43 | 89 | 9.6 | £13.23 | In Stock | |
| 1630970X | 9.70 | 43 | 89 | 9.7 | £13.23 | In Stock | |
| 1630980X | 9.80 | 43 | 89 | 9.8 | £13.23 | In Stock | |
| 1630990X | 9.90 | 43 | 89 | 9.9 | £13.23 | In Stock | |
| 1631000X | 10.00 | 43 | 89 | 10 | £14.39 | In Stock | |
| 1631020X | 10.20 | 43 | 89 | 10.2 | £14.39 | In Stock | |
| 1631050X | 10.50 | 43 | 89 | 10.5 | £15.39 | In Stock | |
| 1631080X | 10.80 | 47 | 95 | 10.8 | £15.39 | 1-2 days | |
| 1631100X | 11.00 | 47 | 95 | 11 | £16.30 | In Stock | |
| 1631120X | 11.20 | 47 | 95 | 11.2 | £16.98 | In Stock | |
| 1631150X | 11.50 | 47 | 95 | 11.5 | £17.07 | In Stock | |
| 1631200X | 12.00 | 51 | 102 | 12 | £19.67 | In Stock | |
| 1631250X Viewing | 12.50 | 51 | 102 | 12.5 | £22.92 | In Stock | |
| 1631300X | 13.00 | 51 | 102 | 13 | £23.89 | In Stock |
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